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TI-2021-17557 Aliases CVE-2021-40516GHSA-82mm-45xg-j4xh

WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a…

Priority LOW 36CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.

Why it matters now

EPSS 0.01594 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:weechat:weechat:*:*:*:*:*:*:*:*0.4.1 to before 3.2.1Vulnerableweechat
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:weechat:weechat:*:*:*:*:*:*:*:* Versions 0.4.1 to before 3.2.1 Vulnerable ·weechat
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-40516
  2. 2026-10-03 Alias added: GHSA-82mm-45xg-j4xh

References

Patch 2

Advisory 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences