CVE-2026-1502

UNKNOWN 0.0

HTTP client proxy tunnel headers not validated for CR/LF

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

13th

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

Vendor	python software foundation
Product	cpython
Published	Apr 10, 2026
Last Updated	Apr 13, 2026

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Affected Versions

Python Software Foundation / CPython

0 < 3.15.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/python/cpython/pull/146212 github.com: https://github.com/python/cpython/issues/146211 mail.python.org: https://mail.python.org/archives/list/[email protected]/thread/2IVPAEQWUJBCTQZEJEVTYCIKSMQPGRZ3/ github.com: https://github.com/python/cpython/commit/05ed7ce7ae9e17c23a04085b2539fe6d6d3cef69 openwall.com: http://www.openwall.com/lists/oss-security/2026/04/11/4

Credits

🔍 senseicat Seth Larson