CVE-2025-20051

Description

Mattermost allows reading arbitrary files in github.com/mattermost/mattermost-server

How to fix CVE-2025-20051

To remediate CVE-2025-20051, upgrade the affected package to a fixed version below.

• Go/github.com/mattermost/mattermost-server—upgrade to 9.11.8+incompatible or later
• —no fix listed
• —no fix listed
• —upgrade to 8.0.0-20250122165010-4ed702ccff4e or later
• —upgrade to 8.0.0-20250122165010-4ed702ccff4e or later

Is CVE-2025-20051 being exploited?

Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

• >= 9.11.0-rc1+incompatible, < 9.11.8+incompatible, >= 10.2.0-rc1+incompatible, < 10.2.3+incompatible, >= 10.3.0-rc1+incompatible, < 10.3.3+incompatible, >= 10.4.0-rc1+incompatible, < 10.4.2+incompatible
• from 0
• from 0
• from 0, < 8.0.0-20250122165010-4ed702ccff4e
• from 0, < 8.0.0-20250122165010-4ed702ccff4e

CVSS scores

References (6)

• ADVISORYgithub.com/advisories/GHSA-v469-7wp6-7cvp
• ADVISORYnvd.nist.gov/vuln/detail/CVE-2025-20051
• PATCHgithub.com/mattermost/mattermost
• WEBgithub.com/mattermost/mattermost/commit/4ed702ccff4ec3c9eff832a9b6060f9f4454141d