CVE-2025-20088

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate post props which allows a malicious authenticated user to cause a crash via a malicious post.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-1287

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	10.2.0; >= 9.11.0, <= 9.11.5; >= 10.0.0, <= 10.0.3; >= 10.1.0, <= 10.1.3

References

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

Timeline

Published: Jan 15, 2025
Last modified: Jun 17, 2026
NVD status: Analyzed

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