PT-2025-38620 · Mattermost · Mattermost

Daw10 · Published 2025-09-19 · Updated 2025-10-27 · CVE-2025-9081

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Mattermost versions 10.5.x through 10.5.8 Mattermost versions 9.11.x through 9.11.17

Description Mattermost fails to properly validate access controls, allowing any authenticated user to download sensitive files. This is possible through the board file download endpoint using UUID enumeration.

Recommendations Update Mattermost versions prior to 10.5.9. Update Mattermost versions prior to 9.11.18.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2025-9081

GHSA-F72G-52V7-MG3P

GO-2025-3978

OPENSUSE-SU-2025:15576-1

SUSE-SU-2025:3799-1

Affected Products

Mattermost

References · 49

• https://osv.dev/vulnerability/GHSA-f72g-52v7-mg3p · Vendor Advisory
• https://mattermost.com/security-updates · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:3799-1 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2025-3978 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-9081 · Security Note
• https://osv.dev/vulnerability/CVE-2025-9081 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15576-1 · Vendor Advisory
• https://github.com/mattermost/mattermost-plugin-boards · Note
• https://github.com/mattermost/mattermost-plugin-boards/pull/114 · Note
• https://github.com/mattermost/mattermost-plugin-boards/commit/3f3e3becfe1d66db0d0f4fd235f04afd6e1ec40b · Note
• https://suse.com/security/cve/CVE-2025-59346 · Note
• https://suse.com/security/cve/CVE-2024-58267 · Note
• https://twitter.com/CVEnew/status/1969291927766835328 · Twitter Post
• https://suse.com/security/cve/CVE-2025-59348 · Note
• https://suse.com/security/cve/CVE-2025-47910 · Note