CVE-2026-103995

Lenient parsing of integers for response body and chunk framing

State: Published
Severity: 2.0 Low
Published: Oct 27, 2026
Updated: Oct 28, 2026
Reserved: Oct 1, 2026

Description

Response body and chunk parsing would handle non-hex or negative integers incorrectly which could result in misinterpreting HTTP response contents.

Scores

CVSS	Score	Vector	Source
4.0	2.0 Low	CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N	PSF

Weaknesses

CWE-444

Affected Products

Product	Versions
CPythonPython Software Foundation	before 3.16.0Affected

References

https://github.com/python/cpython/pull/150752patch
https://github.com/python/cpython/issues/150751issue-tracking
https://github.com/python/cpython/commit/2eb2af805c156ca52b316bb4ced5e0ab3971d0aepatch
https://github.com/python/cpython/commit/9f52b443c002cccfb54bda0706a9276b6b4a109dpatch

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