Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to unbounded decompression of highly compressed HTTP request bodies when the HTTP parser auto_decompress feature is enabled.

Affected versions of the aiohttp package are vulnerable to Request Smuggling due to inconsistent Unicode processing of non-ASCII HTTP header values. In the pure-Python HTTP parser (used when the C extensions are not installed or when AIOHTTP_NO_EXTENSIONS is enabled), aiohttp.http_parser.parse_headers() and helpers such as _is_supported_upgrade() and HttpParser._is_chunked_te() apply .lower() to Upgrade, Transfer-Encoding, and Content-Encoding values without first enforcing ASCII-only input, allowing certain non-ASCII characters to be transformed during case-folding and creating parsing discrepancies.

Affected versions of the aiohttp package are vulnerable to Request Smuggling due to Unicode digit matching in the Range header parser. In aiohttp.web_request.BaseRequest.http_range, the Range header is parsed with the regular expression ^bytes=(\d*)-(\d*)$ via re.findall(...) without restricting \d to ASCII, which allows non-ASCII decimal characters to be accepted as valid byte-range values.

Affected versions of the aiohttp package are vulnerable to Information Disclosure due to static-file path normalisation enabling inference of absolute path component existence. In aiohttp, applications that register a static route via aiohttp.web.static() may expose filesystem path information because the static handler’s normalization and response behaviour lets a requester distinguish which absolute path components exist.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to relying on Python assert statements for malformed request handling, which are removed when interpreter optimizations are enabled. The aiohttp.web_request.Request.post() method can trigger an infinite loop in multipart POST body processing because assertions in multipart parsing paths, such as aiohttp.multipart.BodyPartReader.read_chunk() and _read_chunk_from_stream() are bypassed, preventing the code from enforcing an exit condition on invalid EOF and boundary states.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to improper enforcement of request size limits during multipart form parsing. The aiohttp aiohttp.web_request.Request.post() method in aiohttp/web_request.py iterates over multipart fields but (prior to the fix) resets its running byte counter per part rather than tracking the total size of the entire multipart form, allowing the aggregate payload to grow without being bounded by client_max_size.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to excessive blocking CPU usage when processing a large number of HTTP chunked messages. When an aiohttp server endpoint calls request.read(), the chunked body handling performs costly per-chunk processing that can consume a moderate amount of blocking CPU time (for example, around one second) when the request contains an unusually large number of chunks.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to excessive warning-level logging when parsing invalid Cookie headers. When server code accesses aiohttp.web_request.Request.cookies, the aiohttp._cookie_helpers.parse_cookie_header() function validates cookie names and can emit a log entry for each illegal cookie name, enabling a single request to generate a large number of warning logs.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to unbounded decompression of highly compressed HTTP request bodies when the HTTP parser auto_decompress feature is enabled.

Affected versions of the aiohttp package are vulnerable to Request Smuggling due to inconsistent Unicode processing of non-ASCII HTTP header values. In the pure-Python HTTP parser (used when the C extensions are not installed or when AIOHTTP_NO_EXTENSIONS is enabled), aiohttp.http_parser.parse_headers() and helpers such as _is_supported_upgrade() and HttpParser._is_chunked_te() apply .lower() to Upgrade, Transfer-Encoding, and Content-Encoding values without first enforcing ASCII-only input, allowing certain non-ASCII characters to be transformed during case-folding and creating parsing discrepancies.

Affected versions of the aiohttp package are vulnerable to Request Smuggling due to Unicode digit matching in the Range header parser. In aiohttp.web_request.BaseRequest.http_range, the Range header is parsed with the regular expression ^bytes=(\d*)-(\d*)$ via re.findall(...) without restricting \d to ASCII, which allows non-ASCII decimal characters to be accepted as valid byte-range values.

Affected versions of the aiohttp package are vulnerable to Information Disclosure due to static-file path normalisation enabling inference of absolute path component existence. In aiohttp, applications that register a static route via aiohttp.web.static() may expose filesystem path information because the static handler’s normalization and response behaviour lets a requester distinguish which absolute path components exist.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to relying on Python assert statements for malformed request handling, which are removed when interpreter optimizations are enabled. The aiohttp.web_request.Request.post() method can trigger an infinite loop in multipart POST body processing because assertions in multipart parsing paths, such as aiohttp.multipart.BodyPartReader.read_chunk() and _read_chunk_from_stream() are bypassed, preventing the code from enforcing an exit condition on invalid EOF and boundary states.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to improper enforcement of request size limits during multipart form parsing. The aiohttp aiohttp.web_request.Request.post() method in aiohttp/web_request.py iterates over multipart fields but (prior to the fix) resets its running byte counter per part rather than tracking the total size of the entire multipart form, allowing the aggregate payload to grow without being bounded by client_max_size.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to excessive blocking CPU usage when processing a large number of HTTP chunked messages. When an aiohttp server endpoint calls request.read(), the chunked body handling performs costly per-chunk processing that can consume a moderate amount of blocking CPU time (for example, around one second) when the request contains an unusually large number of chunks.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to excessive warning-level logging when parsing invalid Cookie headers. When server code accesses aiohttp.web_request.Request.cookies, the aiohttp._cookie_helpers.parse_cookie_header() function validates cookie names and can emit a log entry for each illegal cookie name, enabling a single request to generate a large number of warning logs.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to unbounded decompression of highly compressed HTTP request bodies when the HTTP parser auto_decompress feature is enabled.

Affected versions of the aiohttp package are vulnerable to Request Smuggling due to inconsistent Unicode processing of non-ASCII HTTP header values. In the pure-Python HTTP parser (used when the C extensions are not installed or when AIOHTTP_NO_EXTENSIONS is enabled), aiohttp.http_parser.parse_headers() and helpers such as _is_supported_upgrade() and HttpParser._is_chunked_te() apply .lower() to Upgrade, Transfer-Encoding, and Content-Encoding values without first enforcing ASCII-only input, allowing certain non-ASCII characters to be transformed during case-folding and creating parsing discrepancies.

Affected versions of the aiohttp package are vulnerable to Request Smuggling due to Unicode digit matching in the Range header parser. In aiohttp.web_request.BaseRequest.http_range, the Range header is parsed with the regular expression ^bytes=(\d*)-(\d*)$ via re.findall(...) without restricting \d to ASCII, which allows non-ASCII decimal characters to be accepted as valid byte-range values.

Affected versions of the aiohttp package are vulnerable to Information Disclosure due to static-file path normalisation enabling inference of absolute path component existence. In aiohttp, applications that register a static route via aiohttp.web.static() may expose filesystem path information because the static handler’s normalization and response behaviour lets a requester distinguish which absolute path components exist.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to relying on Python assert statements for malformed request handling, which are removed when interpreter optimizations are enabled. The aiohttp.web_request.Request.post() method can trigger an infinite loop in multipart POST body processing because assertions in multipart parsing paths, such as aiohttp.multipart.BodyPartReader.read_chunk() and _read_chunk_from_stream() are bypassed, preventing the code from enforcing an exit condition on invalid EOF and boundary states.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to improper enforcement of request size limits during multipart form parsing. The aiohttp aiohttp.web_request.Request.post() method in aiohttp/web_request.py iterates over multipart fields but (prior to the fix) resets its running byte counter per part rather than tracking the total size of the entire multipart form, allowing the aggregate payload to grow without being bounded by client_max_size.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to excessive blocking CPU usage when processing a large number of HTTP chunked messages. When an aiohttp server endpoint calls request.read(), the chunked body handling performs costly per-chunk processing that can consume a moderate amount of blocking CPU time (for example, around one second) when the request contains an unusually large number of chunks.

Affected versions of the aiohttp package are vulnerable to Denial of Service (DoS) due to excessive warning-level logging when parsing invalid Cookie headers. When server code accesses aiohttp.web_request.Request.cookies, the aiohttp._cookie_helpers.parse_cookie_header() function validates cookie names and can emit a log entry for each illegal cookie name, enabling a single request to generate a large number of warning logs.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cbor2 package are vulnerable to Information Disclosure due to the CBORDecoder state being reused without clearing shareable values between decode operations. In cbor2, CBORDecoder.decode_from_bytes() and the CBORDecoder.fp setter (including the C extension _CBORDecoder_set_fp and the pure-Python cbor2/_decoder.py implementation) do not reset the internal shareables list that stores tag 28 (shareable) values for later retrieval via tag 29 (sharedref), allowing those references to persist across separate messages.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cbor2 package are vulnerable to Information Disclosure due to the CBORDecoder state being reused without clearing shareable values between decode operations. In cbor2, CBORDecoder.decode_from_bytes() and the CBORDecoder.fp setter (including the C extension _CBORDecoder_set_fp and the pure-Python cbor2/_decoder.py implementation) do not reset the internal shareables list that stores tag 28 (shareable) values for later retrieval via tag 29 (sharedref), allowing those references to persist across separate messages.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cbor2 package are vulnerable to Information Disclosure due to the CBORDecoder state being reused without clearing shareable values between decode operations. In cbor2, CBORDecoder.decode_from_bytes() and the CBORDecoder.fp setter (including the C extension _CBORDecoder_set_fp and the pure-Python cbor2/_decoder.py implementation) do not reset the internal shareables list that stores tag 28 (shareable) values for later retrieval via tag 29 (sharedref), allowing those references to persist across separate messages.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cbor2 package are vulnerable to Information Disclosure due to the CBORDecoder state being reused without clearing shareable values between decode operations. In cbor2, CBORDecoder.decode_from_bytes() and the CBORDecoder.fp setter (including the C extension _CBORDecoder_set_fp and the pure-Python cbor2/_decoder.py implementation) do not reset the internal shareables list that stores tag 28 (shareable) values for later retrieval via tag 29 (sharedref), allowing those references to persist across separate messages.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.

Affected versions of the cryptography package are vulnerable to Improper Input Validation due to missing prime-order subgroup validation for SECT elliptic-curve points. The public_key_from_numbers, EllipticCurvePublicNumbers.public_key(), load_der_public_key(), and load_pem_public_key() entry points accept attacker-supplied public keys without verifying that the provided point lies in the expected prime-order subgroup, enabling small-subgroup points to pass as valid.

Pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue.