PT-2025-37465 · Mattermost · Mattermost

Daw10 · Published 2025-09-15 · Updated 2025-09-22 · CVE-2025-9078

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Mattermost versions 10.8.x through 10.8.3 Mattermost versions 10.5.x through 10.5.8 Mattermost versions 9.11.x through 9.11.17 Mattermost versions 10.10.x through 10.10.1 Mattermost versions 10.9.x through 10.9.3

Description The Mattermost application does not properly validate cache keys for link metadata. This allows authenticated users to access unauthorized posts and manipulate link previews through hash collision attacks on the FNV-1 hashing function.

Recommendations Update Mattermost to a version later than 10.8.3. Update Mattermost to a version later than 10.5.8. Update Mattermost to a version later than 9.11.17. Update Mattermost to a version later than 10.10.1. Update Mattermost to a version later than 10.9.3.

Fix

Weakness Enumeration

CWE-328

Related Identifiers

CVE-2025-9078

GHSA-9P92-X77W-9FW2

GO-2025-3959

OPENSUSE-SU-2025:15564-1

SUSE-SU-2025:03289-1

Affected Products

Mattermost

References · 53

• https://osv.dev/vulnerability/GHSA-9p92-x77w-9fw2 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15564-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-9078 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-9078 · Security Note
• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03289-1 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2025-3959 · Vendor Advisory
• https://github.com/mattermost/mattermost · Note
• https://github.com/mattermost/mattermost/commit/944ad5cdd9876ef61c78c8275906262a4118755a · Note
• https://github.com/mattermost/mattermost/commit/356880c8430b77a4a390c89d5a33f6928188d137 · Note
• https://github.com/mattermost/mattermost/commit/a8a4badc130be101e5bc4b7916bbcd2f966c4b79 · Note
• https://github.com/mattermost/mattermost/commit/cd87e5c877373f109742aa90a3fa136c14774325 · Note
• https://suse.com/security/cve/CVE-2025-8077 · Note
• https://suse.com/security/cve/CVE-2025-53884 · Note
• https://suse.com/security/cve/CVE-2025-56760 · Note