Vulnerability in Python Software Foundation Cpython
CVE-2025-11468
When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized.
Vulnerability class: CRLF Injection
Published · last modified .
EPSS exploit prediction
EPSS: 0.006 (47.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.001
Affected products
- Python Software Foundation Cpython — versions 0, 3.11.0, 3.12.0
Weakness classification (CWE)
References
- github.com/python/cpython/pull/143936 (patch)
- github.com/python/cpython/issues/143935 (issue-tracking)
- mail.python.org/archives/list/security-announce@python.org/thread/FELSEOLBI2QR6… (vendor-advisory)
- github.com/python/cpython/commit/17d1490aa97bd6b98a42b1a9b324ead84e7fd8a2 (patch)
- github.com/python/cpython/commit/61614a5e5056e4f61ced65008d4576f3df34acb6 (patch)
- github.com/python/cpython/commit/e9970f077240c7c670e8a6fc6662f2b30d3b6ad0 (patch)
- github.com/python/cpython/commit/f738386838021c762efea6c9802c82de65e87796 (patch)
- github.com/python/cpython/commit/a76e4cd62dd68e7cbe86e37e6ed988495a646b66 (patch)
- github.com/python/cpython/commit/003b8315669b9f08b1010a49071f73f15f818094 (patch)