CVE-2026-1299

Sažetak

The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in "BytesGenerator".

Reference

https://cve.org/CVERecord?id=CVE-2024-6923
https://github.com/python/cpython/commit/052e55e7d44718fe46cbba0ca995cb8fcc359413
https://github.com/python/cpython/commit/0a925ab591c45d6638f37b5e57796f36fa0e56d8
https://github.com/python/cpython/commit/7877fe424415bc4a13045e62a90a7277413d8cb9
https://github.com/python/cpython/commit/842ce19a0c0b58d61591e8f6a708c38db1fb94e4
https://github.com/python/cpython/commit/8cdf6204f4ae821f32993f8fc6bad0d318f95f36
https://github.com/python/cpython/commit/e417f05ad77a4c30ddc07f99e90fc0cef43e831a
https://github.com/python/cpython/issues/144125
https://github.com/python/cpython/pull/144126
https://mail.python.org/archives/list/security-announce@python.org/thread/6ZZULGALJTITEAGEXLDJE2C6FORDXPBT/

CVSS

Base:	0.0
Impact:	None
Exploitability:	None

Pristup

Vektor	Složenost	Autentikacija
None	None	None

Impact

Povjerljivost	Cjelovitost	Dostupnost
None	None	None

CVSS vektor

None

Zadnje važnije ažuriranje

13-02-2026 - 17:16

Objavljeno

23-01-2026 - 17:16