CVE-2025-9076 — Mattermost Server exposes sensitive user credentials during shared channel membership synchronization

CVE-2025-9076

Mattermost Server exposes sensitive user credentials during shared channel membership synchronization PUBLISHED

Description (CNA)

Mattermost versions 10.10.x <= 10.10.1 fail to properly sanitize user data during shared channel membership synchronization, which allows malicious or compromised remote clusters to access sensitive user information via unsanitized user objects. This vulnerability affects Mattermost Server instances with shared channels enabled.

Affected (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 10.10.0 through 10.10.1; unaffected 10.11.0; unaffected 10.10.2

CWE

CWE-862

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.