CVE-2025-9076

Description

Mattermost Missing Authorization vulnerability in github.com/mattermost/mattermost-server. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. (If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.) The additional affected modules and versions are: github.com/mattermost/mattermost/server/v8 before v8.0.0-20250729073403-517ae758cd02.

How to fix CVE-2025-9076

To remediate CVE-2025-9076, upgrade the affected package to a fixed version below.

• —upgrade to 10.10.2 or later
• —upgrade to 10.10.2+incompatible or later
• —no fix listed
• —no fix listed
• —upgrade to 8.0.0-20250729073403-517ae758cd02 or later
• —no fix listed

Is CVE-2025-9076 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (6)

• >= 10.10.0, < 10.10.2
• >= 10.10.0+incompatible, < 10.10.2+incompatible
• from 0
• from 0
• from 0, < 8.0.0-20250729073403-517ae758cd02
• from 0

CVSS scores

References (4)

• ADVISORYgithub.com/advisories/GHSA-3vcm-c42p-3hhf
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2025-9076
• PATCHgithub.com/mattermost/mattermost
• WEBmattermost.com/security-updates