CVE-2025-1795

low

Description

During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the separator itself is also unicode-encoded. Expected behavior is that the separating comma remains a plan comma. This can result in the address header being misinterpreted by some mail servers.

References

https://mail.python.org/archives/list/[email protected]/thread/MB62IZMEC3UM6SGHP5LET5JX2Y7H4ZUR/

https://github.com/python/cpython/pull/119099

https://github.com/python/cpython/pull/100885

https://github.com/python/cpython/issues/100884

https://github.com/python/cpython/commit/9148b77e0af91cdacaa7fe3dfac09635c3fe9a74

https://github.com/python/cpython/commit/70754d21c288535e86070ca7a6e90dcb670b8593

https://github.com/python/cpython/commit/09fab93c3d857496c0bd162797fab816c311ee48

Details

Source: Mitre, NVD

Published: 2025-02-28

Updated: 2025-02-28

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 2.3

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

Severity: Low