CVE-2026-1502CWE-93

CVE-2026-1502

published April 10, 2026

CVSS

5.7

EPSS

1%

Percentile

46.0

In the wild

Unconfirmed

What it is

CR/LF bytes were not rejected by HTTP client proxy tunnel headers or host.

The record

Technical detail

CVSS: 5.7 · NONE
CVSS v4.0: Not supplied
EPSS: 0.00562 · 46.0th percentile
Weakness: CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')
Published: 2026-04-10T22:16Z

References (10)

https://github.com/python/cpython/commit/05ed7ce7ae9e17c23a04085b2539fe6d6d3cef69 · [email protected]https://github.com/python/cpython/commit/56b7100b04e44ea27989242b176beb8f016b2c53 · [email protected]https://github.com/python/cpython/commit/58703ec1bdd1eb075e8b01a0c427683ce594dd3e · [email protected]https://github.com/python/cpython/commit/9e071c9b28c17f347f81b388a003d4eeb3c7a8dd · [email protected]https://github.com/python/cpython/commit/b1cf9016335cb637c5a425032e8274a224f4b2ed · [email protected]https://github.com/python/cpython/commit/c00c386faa579ad71196d33408644478488e43ec · [email protected]https://github.com/python/cpython/issues/146211 · [email protected]https://github.com/python/cpython/pull/146212 · [email protected]https://mail.python.org/archives/list/[email protected]/thread/2IVPAEQWUJBCTQZEJEVTYCIKSMQPGRZ3/ · [email protected]http://www.openwall.com/lists/oss-security/2026/04/11/4 · af854a3a-2127-422b-91ae-364da2661108

EPSS history

Timeline

10 APR 17:54Z
HTTP client proxy tunnel headers not validated for CR/LF
cvelistv5