CVE-2025-24920

Name: CVE-2025-24920
Creator: NVD / NIST
Published: 2025-03-21T09:15:12.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2025-24920 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Mattermost versions 10.4.x <= 10.4.2, 10.3.x <= 10.3.3, 9.11.x <= 9.11.8, 10.5.x <= 10.5.0 fail to restrict bookmark creation and updates in archived channels, which allows authenticated users created or update bookmarked in archived channels. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

Mattermost versions 10.4.x <= 10.4.2, 10.3.x <= 10.3.3, 9.11.x <= 9.11.8, 10.5.x <= 10.5.0 fail to restrict bookmark creation and updates in archived channels, which allows authenticated users created or update bookmarked in archived channels

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.22%

12.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost Server	>= 9.11.0, < 9.11.9
Mattermost	Mattermost Server	>= 10.3.0, < 10.3.4
Mattermost	Mattermost Server	>= 10.4.0, < 10.4.3
Mattermost	Mattermost Server	>= 10.5.0, < 10.5.1

References

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

Timeline

Published: Mar 21, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-24920?

How severe is CVE-2025-24920?

CVE-2025-24920 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2025-24920?

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-2025-24920?

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

Scan your code now

Source: NVD / NIST