Affected versions of this package are vulnerable to a potential Denial of Service (DoS) attack due to unbounded recursion when parsing untrusted Protocol Buffers data. The pure-Python implementation fails to enforce recursion depth limits when processing recursive groups, recursive messages, or a series of SGROUP tags, leading to stack overflow conditions that can crash the application by exceeding Python's recursion limit.

Protobuf 3.18.3, 3.19.5, 3.20.2 and 4.21.6 include a fix for CVE-2022-1941: A parsing vulnerability for the MessageSet type in the ProtocolBuffers versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 3.21.5 for protobuf-cpp, and versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 4.21.5 for protobuf-python can lead to out of memory failures. A specially crafted message with multiple key-value per elements creates parsing issues, and can lead to a Denial of Service against services receiving unsanitized input.
https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8gq9-2x98-w8hf

Affected versions of the protobuf package are vulnerable to Denial of Service (DoS) due to missing recursion depth accounting that allows the max_recursion_depth limit to be bypassed. The google.protobuf.json_format.ParseDict() parser fails to increment or enforce max_recursion_depth when traversing nested google.protobuf.Any messages in its internal Any-handling logic, allowing attacker-controlled JSON to recurse far deeper than intended.

Affected versions of this package are vulnerable to a potential Denial of Service (DoS) attack due to unbounded recursion when parsing untrusted Protocol Buffers data. The pure-Python implementation fails to enforce recursion depth limits when processing recursive groups, recursive messages, or a series of SGROUP tags, leading to stack overflow conditions that can crash the application by exceeding Python's recursion limit.

Protobuf 3.18.3, 3.19.5, 3.20.2 and 4.21.6 include a fix for CVE-2022-1941: A parsing vulnerability for the MessageSet type in the ProtocolBuffers versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 3.21.5 for protobuf-cpp, and versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 4.21.5 for protobuf-python can lead to out of memory failures. A specially crafted message with multiple key-value per elements creates parsing issues, and can lead to a Denial of Service against services receiving unsanitized input.
https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8gq9-2x98-w8hf

Affected versions of the protobuf package are vulnerable to Denial of Service (DoS) due to missing recursion depth accounting that allows the max_recursion_depth limit to be bypassed. The google.protobuf.json_format.ParseDict() parser fails to increment or enforce max_recursion_depth when traversing nested google.protobuf.Any messages in its internal Any-handling logic, allowing attacker-controlled JSON to recurse far deeper than intended.

Affected versions of this package are vulnerable to a potential Denial of Service (DoS) attack due to unbounded recursion when parsing untrusted Protocol Buffers data. The pure-Python implementation fails to enforce recursion depth limits when processing recursive groups, recursive messages, or a series of SGROUP tags, leading to stack overflow conditions that can crash the application by exceeding Python's recursion limit.

Protobuf 3.18.3, 3.19.5, 3.20.2 and 4.21.6 include a fix for CVE-2022-1941: A parsing vulnerability for the MessageSet type in the ProtocolBuffers versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 3.21.5 for protobuf-cpp, and versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 4.21.5 for protobuf-python can lead to out of memory failures. A specially crafted message with multiple key-value per elements creates parsing issues, and can lead to a Denial of Service against services receiving unsanitized input.
https://github.com/protocolbuffers/protobuf/security/advisories/GHSA-8gq9-2x98-w8hf

Affected versions of the protobuf package are vulnerable to Denial of Service (DoS) due to missing recursion depth accounting that allows the max_recursion_depth limit to be bypassed. The google.protobuf.json_format.ParseDict() parser fails to increment or enforce max_recursion_depth when traversing nested google.protobuf.Any messages in its internal Any-handling logic, allowing attacker-controlled JSON to recurse far deeper than intended.