GHSA-3x39-62h4-f8j6

GHSA-3x39-62h4-f8j6 PUBLISHED CVSS 9.899999618530273 CRITICAL

Record from GitHub Advisory Database · Published November 27, 2025

Mattermost fails to properly validate OAuth state tokens during OpenID Connect authentication

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
github.com/mattermost/mattermost/server/v8	Go Modules	8.0.0-20251028000919-d3ed703dc833, 8.0.0-20251028000919
github.com/mattermost/mattermost-server	Go Modules	11.0.4, 10.12.2, 10.11.5, 10.5.13

Risk scores

CVSS 3.1

9.899999618530273

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Vendor	Product	Versions
github.com	mattermost/mattermost-server	10.12.0, 10.11.0, 11.0.0
github.com	mattermost/mattermost/server/v8

Timeline

Nov 27, 2025 CVE Published
Apr 9, 2026 Security Advisory

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln GHSA-3x39-62h4-f8j6
vulnetix vdb fixes GHSA-3x39-62h4-f8j6

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-3x39-62h4-f8j6/fixes/registry"

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References

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