CVE-2025-31947

Name: CVE-2025-31947
Creator: NVD / NIST
Published: 2025-05-15T11:15:48.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2025-31947 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to lockout LDAP users following repeated login failures, which allows attackers to lock external LDAP accounts through repeated login failures through Mattermost.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

Description

Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to lockout LDAP users following repeated login failures, which allows attackers to lock external LDAP accounts through repeated login failures through Mattermost.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.29%

20.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-645

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost Server	>= 9.11.0, < 9.11.12
Mattermost	Mattermost Server	>= 10.4.0, < 10.4.5
Mattermost	Mattermost Server	>= 10.5.0, < 10.5.3
Mattermost	Mattermost Server	>= 10.6.0, < 10.6.2

References

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

Timeline

Published: May 15, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-31947?

How severe is CVE-2025-31947?

CVE-2025-31947 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2025-31947?

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-2025-31947?

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

Scan your code now

Source: NVD / NIST