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Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy

Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy

CVE-2026-8466Published 4 months agoUpdated 1 week agoSource: OSV

Affected packages

  • cowboy

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/EEF-CVE-2026-8466

Recommended response stack

Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→

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Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy | HackTribune