GitHub security advisory (AV26-650)
ID: 1feed537-cbc9-511d-93b6-b286e7c23e39
STIX ID: report--1feed537-cbc9-511d-93b6-b286e7c23e39
Feed Name: Canadian Centre for Cyber Security Alerts and Advisories
Threat Score
On June 30, 2026, GitHub published security advisories for GitHub Enterprise Server addressing vulnerabilities in versions 3.17.x through 3.21.x, and released patches for the affected releases. GitHub stated future patches/releases will be signed with a new public key and customers must rotate to the new key before installing those updates; the Cyber Centre urges administrators to review the advisories and apply updates.
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