Nixpkgs security tracker

Untriaged

Permalink CVE-2025-13836

created 2 months, 2 weeks ago

Excessive read buffering DoS in http.client

When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.

References

https://github.com/python/cpython/issues/119451 issue-tracking
https://github.com/python/cpython/pull/119454 patch
https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a991… patch
https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555… patch
https://github.com/python/cpython/issues/119451 issue-tracking
https://github.com/python/cpython/pull/119454 patch
https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a991… patch
https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555… patch
https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7… vendor-advisory
https://github.com/python/cpython/issues/119451 issue-tracking
https://github.com/python/cpython/pull/119454 patch
https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a991… patch
https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555… patch
https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7… vendor-advisory
https://github.com/python/cpython/commit/289f29b0fe38baf2d7cb5854f4bb573cc34a6a… patch
https://github.com/python/cpython/issues/119451 issue-tracking
https://github.com/python/cpython/pull/119454 patch
https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a991… patch
https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555… patch
https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7… vendor-advisory
https://github.com/python/cpython/commit/289f29b0fe38baf2d7cb5854f4bb573cc34a6a… patch
https://github.com/python/cpython/issues/119451 issue-tracking
https://github.com/python/cpython/pull/119454 patch
https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a991… patch
https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555… patch
https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7… vendor-advisory
https://github.com/python/cpython/commit/289f29b0fe38baf2d7cb5854f4bb573cc34a6a… patch
https://github.com/python/cpython/commit/14b1fdb0a94b96f86fc7b86671ea9582b86766… patch
https://github.com/python/cpython/issues/119451 issue-tracking
https://github.com/python/cpython/pull/119454 patch
https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a991… patch
https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555… patch
https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7… vendor-advisory
https://github.com/python/cpython/commit/289f29b0fe38baf2d7cb5854f4bb573cc34a6a… patch
https://github.com/python/cpython/commit/14b1fdb0a94b96f86fc7b86671ea9582b86766… patch
https://github.com/python/cpython/commit/5dc101675fd22918facbbe0fecdc821502beaa… patch
https://github.com/python/cpython/commit/afc40bdd3dd71f343fd9016f6d8eebbacbd658… patch

Affected products

CPython

<3.15.0
<3.15.0a3
<3.14.1
<3.13.11

Matching in nixpkgs

pkgs.haskellPackages.cpython

Bindings for libpython

nixos-unstable 3.9.0
- nixpkgs-unstable 3.9.0
- nixos-unstable-small 3.9.0
nixos-25.11 3.9.0
- nixpkgs-25.11-darwin 3.9.0

Package maintainers

@sheepforce Phillip Seeber <phillip.seeber@googlemail.com>

Suggestion detail

References

Affected products

Matching in nixpkgs

pkgs.haskellPackages.cpython

Package maintainers