{"id":"CVE-2025-13836","details":"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.","aliases":["BIT-libpython-2025-13836","BIT-python-2025-13836","BIT-python-min-2025-13836","PSF-2025-14"],"modified":"2026-04-16T08:44:15.482040301Z","published":"2025-12-01T18:16:04.200Z","related":["ALSA-2026:1374","ALSA-2026:1408","ALSA-2026:1410","ALSA-2026:1828","ALSA-2026:2419","CGA-q36p-p2gv-8p7v","SUSE-SU-2025:4522-1","SUSE-SU-2025:4538-1","SUSE-SU-2025:4539-1","SUSE-SU-2026:0024-1","SUSE-SU-2026:0025-1","SUSE-SU-2026:0027-1","SUSE-SU-2026:0130-1","SUSE-SU-2026:0133-1","SUSE-SU-2026:0268-1","SUSE-SU-2026:0299-1","SUSE-SU-2026:0314-1","SUSE-SU-2026:1012-1","SUSE-SU-2026:1014-1","SUSE-SU-2026:1026-1","SUSE-SU-2026:1027-1","SUSE-SU-2026:1028-1","SUSE-SU-2026:1029-1","SUSE-SU-2026:1030-1","SUSE-SU-2026:1349-1","SUSE-SU-2026:20047-1","SUSE-SU-2026:20125-1","SUSE-SU-2026:20154-1","SUSE-SU-2026:20374-1","SUSE-SU-2026:20768-1","SUSE-SU-2026:20796-1","SUSE-SU-2026:20820-1","SUSE-SU-2026:20825-1","openSUSE-SU-2025:15839-1","openSUSE-SU-2025:15840-1","openSUSE-SU-2025:15846-1","openSUSE-SU-2025:15849-1","openSUSE-SU-2025:15850-1","openSUSE-SU-2025:15851-1","openSUSE-SU-2026:10011-1","openSUSE-SU-2026:10389-1","openSUSE-SU-2026:20081-1","openSUSE-SU-2026:20412-1"],"references":[{"type":"ADVISORY","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/OQ6G7MKRQIS3OAREC3HNG3D2DPOU34XO/"},{"type":"FIX","url":"https://github.com/python/cpython/commit/4ce27904b597c77d74dd93f2c912676021a99155"},{"type":"FIX","url":"https://github.com/python/cpython/commit/5a4c4a033a4a54481be6870aa1896fad732555b5"},{"type":"FIX","url":"https://github.com/python/cpython/commit/5dc101675fd22918facbbe0fecdc821502beaaf0"},{"type":"FIX","url":"https://github.com/python/cpython/commit/289f29b0fe38baf2d7cb5854f4bb573cc34a6a15"},{"type":"FIX","url":"https://github.com/python/cpython/commit/afc40bdd3dd71f343fd9016f6d8eebbacbd6587c"},{"type":"FIX","url":"https://github.com/python/cpython/issues/119451"},{"type":"FIX","url":"https://github.com/python/cpython/pull/119454"},{"type":"FIX","url":"https://github.com/python/cpython/commit/14b1fdb0a94b96f86fc7b86671ea9582b8676628"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"627894459a84be3488a1789919679c997056a03c"},{"introduced":"0"},{"last_affected":"ebf955df7a89ed0c7968f79faec1de49f61ed7cb"},{"fixed":"14b1fdb0a94b96f86fc7b86671ea9582b8676628"},{"fixed":"289f29b0fe38baf2d7cb5854f4bb573cc34a6a15"},{"fixed":"4ce27904b597c77d74dd93f2c912676021a99155"},{"fixed":"5a4c4a033a4a54481be6870aa1896fad732555b5"},{"fixed":"5dc101675fd22918facbbe0fecdc821502beaaf0"},{"fixed":"afc40bdd3dd71f343fd9016f6d8eebbacbd6587c"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"3.13.11"},{"introduced":"0"},{"last_affected":"3.14.0-NA"}]}}],"versions":["v0.9.8","v0.9.9","v1.0.1","v1.0.2","v1.1","v1.1.1","v1.2","v1.2b1","v1.2b2","v1.2b3","v1.2b4","v1.3","v1.3b1","v1.4","v1.4b1","v1.4b2","v1.4b3","v1.5","v1.5.1","v1.5.2","v1.5.2a1","v1.5.2a2","v1.5.2b1","v1.5.2b2","v1.5.2c1","v1.5a1","v1.5a2","v1.5a3","v1.5a4","v1.5b1","v1.5b2","v1.6a1","v1.6a2","v2.0","v2.0b1","v2.0b2","v2.0c1","v2.1","v2.1a1","v2.1a2","v2.1b1","v2.1b2","v2.1c1","v2.1c2","v2.2a3","v2.3c1","v2.3c2","v2.4","v2.4a1","v2.4a2","v2.4a3","v2.4b1","v2.4b2","v2.4c1","v3.0a1","v3.0a2","v3.0a3","v3.0a4","v3.0a5","v3.0b1","v3.0b2","v3.0b3","v3.0rc1","v3.0rc2","v3.0rc3","v3.1","v3.10.0a1","v3.10.0a7","v3.10.0b1","v3.10.0b2","v3.10.0b3","v3.10.0b4","v3.10.0rc1","v3.10.0rc2","v3.10.1","v3.10.10","v3.10.11","v3.10.12","v3.10.13","v3.10.14","v3.10.15","v3.10.16","v3.10.17","v3.10.18","v3.10.19","v3.10.2","v3.10.3","v3.10.4","v3.10.5","v3.10.6","v3.10.7","v3.10.8","v3.10.9","v3.11.0a3","v3.11.0a4","v3.11.0a5","v3.11.0a6","v3.11.0a7","v3.11.0b1","v3.11.0b2","v3.11.0b3","v3.11.0b4","v3.11.0b5","v3.11.0rc1","v3.11.0rc2","v3.11.1","v3.11.10","v3.11.11","v3.11.12","v3.11.13","v3.11.14","v3.11.2","v3.11.3","v3.11.4","v3.11.5","v3.11.6","v3.11.7","v3.11.8","v3.11.9","v3.12.0","v3.12.0a1","v3.12.0a2","v3.12.0a3","v3.12.0a4","v3.12.0a5","v3.12.0a6","v3.12.0a7","v3.12.0b1","v3.12.0b2","v3.12.0b3","v3.12.0b4","v3.12.0rc1","v3.12.0rc2","v3.12.0rc3","v3.12.1","v3.12.10","v3.12.11","v3.12.12","v3.12.2","v3.12.3","v3.12.4","v3.12.5","v3.12.6","v3.12.7","v3.12.8","v3.12.9","v3.13.0","v3.13.0a1","v3.13.0a2","v3.13.0a3","v3.13.0a4","v3.13.0a5","v3.13.0a6","v3.13.0b1","v3.13.0b2","v3.13.0b3","v3.13.0b4","v3.13.0rc1","v3.13.0rc2","v3.13.0rc3","v3.13.1","v3.13.10","v3.13.2","v3.13.3","v3.13.4","v3.13.5","v3.13.6","v3.13.7","v3.13.8","v3.14.0","v3.14.0a1","v3.14.0a2","v3.14.0a3","v3.14.0a4","v3.14.0a5","v3.14.0a6","v3.14.0a7","v3.14.0b1","v3.14.0b2","v3.14.0b3","v3.14.0b4","v3.14.0rc1","v3.14.0rc2","v3.14.0rc3","v3.15.0a1","v3.15.0a2","v3.1a1","v3.1a2","v3.1b1","v3.1rc1","v3.1rc2","v3.2a1","v3.2a2","v3.2a3","v3.2a4","v3.2b1","v3.2b2","v3.2rc1","v3.2rc2","v3.2rc3","v3.3.0a2","v3.3.0a3","v3.3.0a4","v3.3.0b1","v3.3.0b2","v3.3.0rc1","v3.3.0rc2","v3.3.0rc3","v3.4.0a1","v3.4.0a2","v3.4.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