MEDIUMPyPI

h2: Duplicate Host header could facilitate request smuggling

h2: Duplicate Host header could facilitate request smuggling

CVE-2026-71554Published 2 weeks agoUpdated 2 weeks agoSource: OSV

Affected packages

  • h2before 4.4.1

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
EPSS percentile

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.

h2: Duplicate Host header could facilitate request smuggling | HackTribune