GitHub security advisory (AV26-383)

Serial number: AV26-383
Date: April 23, 2026

On April 21, 2026, GitHub published security advisories to address vulnerabilities in the following products:

  • GitHub Enterprise Server – versions 3.20.x prior to 3.20.1
  • GitHub Enterprise Server – versions 3.19.x prior to 3.19.5
  • GitHub Enterprise Server – versions 3.18.x prior to 3.18.8
  • GitHub Enterprise Server – versions 3.17.x prior to 3.17.14
  • GitHub Enterprise Server – versions 3.16.x prior to 3.16.17

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

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