CVE-2025-13324

Name: CVE-2025-13324
Creator: NVD / NIST
Published: 2025-12-17T19:16:01.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.7/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2025-13324 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. Mattermost versions 10.11.x <= 10.11.5, 11.0.x <= 11.0.4, 10.12.x <= 10.12.2 fail to invalidate remote cluster invite tokens when using the legacy (version 1) protocol or when the confirming party does not provide a refreshed token, which allows an attacker who has obtained an invite token to authenticate as the remote cluster and perform limited actions on shared channels even after the invitation has been legitimately confirmed.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

Mattermost versions 10.11.x <= 10.11.5, 11.0.x <= 11.0.4, 10.12.x <= 10.12.2 fail to invalidate remote cluster invite tokens when using the legacy (version 1) protocol or when the confirming party does not provide a refreshed token, which allows an attacker who has obtained an invite token to authenticate as the remote cluster and perform limited actions on shared channels even after the invitation has been legitimately confirmed.

Metrics

CVSS 3.1

3.7/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.17%

6.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost Server	>= 10.11.0, < 10.11.6
Mattermost	Mattermost Server	>= 10.12.0, < 10.12.3
Mattermost	Mattermost Server	>= 11.0.0, < 11.0.5

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Dec 17, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-13324?

How severe is CVE-2025-13324?

CVE-2025-13324 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2025-13324?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-13324?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST