Medium, CVSS 4.6GoPublished
Allstar Reviewbot has Authentication Bypass via Hard-coded Webhook Secret
CVE-2025-61926 · GHSA-33f4-mjch-7fpr
- Affected
- Go github.com/ossf/allstar < 0.0.0-20250721181116-e004ecb540d6
- Fixed in
- 0.0.0-20250721181116-e004ecb540d6· Vendor fix available
- Issue
- A vulnerability in Allstar’s Reviewbot component caused inbound webhook requests to be validated against a hard-coded, shared secret: https://github.com/ossf/allstar/blob/294ae985cc2facd0918e8d820e4196021aa0b914/pkg/reviewbot/reviewbot.go#L59 The value used for the secret token was compiled into the Allstar binary and could not be configured at runtime. In practice, this meant that every deployment using Reviewbot would validate requests with the same secret unless the operator modified source code and rebuilt the component - an expectation that is not documented and is easy to miss. While Reviewbot is not commonly enabled in standard Allstar setups, we are issuing this advisory to reach any environments where it may have been deployed. Affected Versions All Allstar releases prior to v4.5 that include the Reviewbot code path are affected. Deployments on v4.5 and later are not affected. If you have not enabled or exposed the Reviewbot endpoint, this issue does not apply to your…
Recommended action: Upgrade to 0.0.0-20250721181116-e004ecb540d6 (pre-release) or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.