VIR Vulnerability Intelligence Relay

CVE-2026-8466

high
Published 2026-05-13 · Modified 2026-05-19
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
—
CVSS v4 NEW
8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
VIR risk
8.0

Description

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

Predictions

Exploit likelihood
20%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact
OSVersionStatusFixed in
debian debiansidaffected
windows windowsaffected

Package impact
EcosystemPackageVulnerableFixed
Hexcowboy>=2.0.0,<2.15.02.15.0
ERLANGcowboy>= 2.0.0, < 2.15.02.15.0

References

CWEs

CWE-770

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.