CVE-2025-619264.6MediumCWE-453

CVE-2025-61926: Allstar Reviewbot has Authentication Bypass via Hard-coded Webhook Secret

ossf · allstar

Affected: ossf allstar · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.5%probability of exploitation in the next 30 days

43rd percentile

050100

Higher than 43% of scored CVEs

4.6MediumCVSS 4.0

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

ossf · allstar< 0.0.0-20250721181116-e004ecb540d6

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Insecure Default Variable Initialization · Misconfiguration and Insecure Design
Published: October 2025
Band: Unlikely (under 1%), October 2025

CoverageNo articles yet

No CyberSIXT article names CVE-2025-61926 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.