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Apache HttpComponents Core HTTP/1 header parsing can cause memory-exhaustion denial of service

Apache HttpComponents Core HTTP/1 header parsing can cause memory-exhaustion denial of service

CVE-2026-54399Published 1 month agoUpdated 1 week agoSource: OSV

Affected packages

  • org.apache.httpcomponents.core5:httpcore5— before 5.4.3

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.

Sources

Structured record: https://osv.dev/vulnerability/GHSA-hf6x-8p5f-cgmf

Recommended response stack

Snyk — Scan your dependencies in CI and fix this vulnerability.→

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Apache HttpComponents Core HTTP/1 header parsing can cause memory-exhaustion denial of service | HackTribune