Description
CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Python Software Foundation CPython
Default version status: unaffected
0 to < 3.10.21affected3.11.0 to < 3.11.16affected3.12.0 to < 3.12.14affected3.13.0 to < 3.13.14affected3.14.0a1 to < 3.14.5rc1affected3.15.0a1 to < 3.15.0b1affected
References
- https://github.com/python/cpython/pull/146212 ↗
- https://github.com/python/cpython/issues/146211 ↗
- https://mail.python.org/archives/list/security-announce@python.org/thread/2IVPAEQWUJBCTQZEJEVTYCIKSMQPGRZ3/ ↗
- https://github.com/python/cpython/commit/05ed7ce7ae9e17c23a04085b2539fe6d6d3cef69 ↗
- https://github.com/python/cpython/commit/b1cf9016335cb637c5a425032e8274a224f4b2ed ↗
- https://github.com/python/cpython/commit/9e071c9b28c17f347f81b388a003d4eeb3c7a8dd ↗
- https://github.com/python/cpython/commit/c00c386faa579ad71196d33408644478488e43ec ↗
- https://github.com/python/cpython/commit/56b7100b04e44ea27989242b176beb8f016b2c53 ↗
- https://github.com/python/cpython/commit/58703ec1bdd1eb075e8b01a0c427683ce594dd3e ↗
- http://www.openwall.com/lists/oss-security/2026/04/11/4 ↗