CVE-2024-41926

Name: CVE-2024-41926
Creator: NVD / NIST
Published: 2024-08-01T15:15:13.9+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2024-41926 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.

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

0.18%

7.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost Server	>= 9.5.0, < 9.5.7
Mattermost	Mattermost Server	9.9.0

References

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

Timeline

Published: Aug 1, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-41926?

How severe is CVE-2024-41926?

CVE-2024-41926 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2024-41926?

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-2024-41926?

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

Scan your code now

Source: NVD / NIST