Vulnerability · Published May 13, 2026 · Assigned by GitHub_M

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

Medium 5.3

In plain English

A medium-severity improper input validation in MISP from MISP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.2%top 92.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
MISP	MISP	< 2.5.37

Weakness: CWE-20 · 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

References

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