Go/github.com/mattermost/mattermost/server/v8 CVE-2026-26246: medium 4.3, EPSS 0.23%

Mattermost fails to bound memory allocation when processing PSD image files

Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260115183946-38b413a27604 or later.

go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260115183946-38b413a27604

Affected

Fixed versions

Sources

• osv: GHSA-44mv-jq72-gj49
• https://nvd.nist.gov/vuln/detail/CVE-2026-26246
• https://github.com/mattermost/mattermost/commit/38b413a27604e8721fbe008f8ec4b4e6c47ad4f0
• https://github.com/mattermost/mattermost
• https://mattermost.com/security-updates

CVE-2026-26246 · published 2026-03-16T15:30:42Z · modified 2026-04-27T14:19:12Z · JSON