Python http.client CRLF injection via proxy tunnel headers (before 3.15)
CVE-2026-1502 Published on April 10, 2026

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

Vendor Advisory NVD


Products Associated with CVE-2026-1502

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Python
 

Affected Versions

Python Software Foundation CPython:

Exploit Probability

EPSS
0.04%
Percentile
12.47%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.