Allstar is a GitHub App to set and enforce security policies. In versions prior to 4.5, a vulnerability in Allstar’s Reviewbot component caused inbound webhook requests to be validated against a hard-coded, shared secret. 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. All Allstar releases prior to v4.5 that include the Reviewbot code path are affected. Deployments on v4.5 and later are not affected. Those who have not enabled or exposed the Reviewbot endpoint are not exposed to this issue.
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Fri, 10 Oct 2025 11:30:00 +0000
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Allstar
Allstar reviewbot |
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Allstar reviewbot |
Thu, 09 Oct 2025 21:30:00 +0000
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Description | Allstar is a GitHub App to set and enforce security policies. In versions prior to 4.5, a vulnerability in Allstar’s Reviewbot component caused inbound webhook requests to be validated against a hard-coded, shared secret. 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. All Allstar releases prior to v4.5 that include the Reviewbot code path are affected. Deployments on v4.5 and later are not affected. Those who have not enabled or exposed the Reviewbot endpoint are not exposed to this issue. | |
Title | Allstar Reviewbot has Authentication Bypass via Hard-coded Webhook Secret | |
Weaknesses | CWE-453 CWE-798 |
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References |
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Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-10-09T21:20:32.670Z
Reserved: 2025-10-03T22:21:59.616Z
Link: CVE-2025-61926

No data.

Status : Received
Published: 2025-10-09T22:15:32.630
Modified: 2025-10-09T22:15:32.630
Link: CVE-2025-61926

No data.