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

Medium 5.3 Published 13 May 2026 Updated 14 May 2026

Attackers can submit malformed UUIDs in MISP Collections, causing integrity issues or unexpected behavior in dependent code paths.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-44379?

CVE-2026-44379 is a medium-severity vulnerability in Misp-Project Misp, published on 13 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

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.

Weakness: CWE-20

Which versions are affected by CVE-2026-44379?

It affects 1 product.

Products include Misp-Project Misp.

How do I fix CVE-2026-44379?

No fix has been published for CVE-2026-44379 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-44379 being exploited?

There is no known exploitation of CVE-2026-44379 in the wild and no public exploit code.

All Misp-Project Misp vulnerabilities

Sources

Also known as GHSA-jrvj-84mg-8f29.