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python-hyper h11 vulnerabilities

1 published CVE affecting python-hyper h11, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).

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

Latest python-hyper h11 CVEs

Newest publication first

  1. CVE-2025-43859 h11 accepts some malformed Chunked-Encoding bodies

    Published
    CriticalCVSS 9.1 EPSS 0.59%

    h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since explo...

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.