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redhat/python-h2 vulnerabilities

1 published CVE affecting redhat/python-h2, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).

Total
1
Critical
0
High
0
Medium
1
Low
0
Unscored
0
CISA KEV
0

Latest redhat/python-h2 CVEs

Newest publication first

  1. CVE-2026-71554 h2: Duplicate Host header could facilitate request smuggling

    Published
    MediumCVSS 5.3

    h2 is a pure-Python implementation of a HTTP/2 protocol stack. Versions up to and including 4.4.0 accept request header blocks containing more than one Host header, and forward every Host header to the consuming application. Where the consumer downgrades HTTP/2 to HTTP/1.1, the r...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.