Requests

-------------------

**Security**
- Versions of Requests between v2.3.0 and v2.30.0 are vulnerable to potential
forwarding of `Proxy-Authorization` headers to destination servers when
following HTTPS redirects.

When proxies are defined with user info (https://user:passproxy:8080), Requests
will construct a `Proxy-Authorization` header that is attached to the request to
authenticate with the proxy.

In cases where Requests receives a redirect response, it previously reattached
the `Proxy-Authorization` header incorrectly, resulting in the value being
sent through the tunneled connection to the destination server. Users who rely on
defining their proxy credentials in the URL are *strongly* encouraged to upgrade
to Requests 2.31.0+ to prevent unintentional leakage and rotate their proxy
credentials once the change has been fully deployed.

Users who do not use a proxy or do not supply their proxy credentials through
the user information portion of their proxy URL are not subject to this
vulnerability.

Full details can be read in our [Github Security Advisory](https://github.com/psf/requests/security/advisories/GHSA-j8r2-6x86-q33q)
and [CVE-2023-32681](https://nvd.nist.gov/vuln/detail/CVE-2023-32681).

-------------------

**Dependencies**
- ⚠️ Added support for urllib3 2.0. ⚠️

This may contain minor breaking changes so we advise careful testing and
reviewing https://urllib3.readthedocs.io/en/latest/v2-migration-guide.html
prior to upgrading.

Users who wish to stay on urllib3 1.x can pin to `urllib3<2`.

-------------------

**Improvements**

- Requests now defers chunked requests to the urllib3 implementation to improve
standardization. (6226)
- Requests relaxes header component requirements to support bytes/str subclasses. (6356)

-------------------

**Dependencies**

- Requests now supports charset\_normalizer 3.x. (6261)

**Bugfixes**

- Updated MissingSchema exception to suggest https scheme rather than http. (6188)

-------------------

**Improvements**

- Speed optimization in `iter_content` with transition to `yield from`. (6170)

**Dependencies**

- Added support for chardet 5.0.0 (6179)
- Added support for charset-normalizer 2.1.0 (6169)

-------------------

**Deprecations**

- ⚠️ Requests has officially dropped support for Python 2.7. ⚠️ (6091)
- Requests has officially dropped support for Python 3.6 (including pypy3.6). (6091)

**Improvements**

- Wrap JSON parsing issues in Request's JSONDecodeError for payloads without
an encoding to make `json()` API consistent. (6097)
- Parse header components consistently, raising an InvalidHeader error in
all invalid cases. (6154)
- Added provisional 3.11 support with current beta build. (6155)
- Requests got a makeover and we decided to paint it black. (6095)

**Bugfixes**

- Fixed bug where setting `CURL_CA_BUNDLE` to an empty string would disable
cert verification. All Requests 2.x versions before 2.28.0 are affected. (6074)
- Fixed urllib3 exception leak, wrapping `urllib3.exceptions.SSLError` with
`requests.exceptions.SSLError` for `content` and `iter_content`. (6057)
- Fixed issue where invalid Windows registry entries caused proxy resolution
to raise an exception rather than ignoring the entry. (6149)
- Fixed issue where entire payload could be included in the error message for
JSONDecodeError. (6036)