CVE-2026-1502 | BDVDB-2026-326211 Detail
Python Software FoundationCPython
Description#
CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.
Impact#
Per CVSS v4.0: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.
Weaknesses#
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
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
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.