Outage in GitLab

Cosign Signing Fails on Forked Projects

Resolved Minor
July 08, 2025 - Started 6 months ago - Lasted about 18 hours

Incident Report

We're investigating an issue where Cosign signing fails for container images and build artifacts in forked projects due to missing claims. Our team is actively working on a fix.
Components affected
GitLab Container Registry

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Latest Updates ( sorted recent to last )
6 months ago - at 07/08/2025 07:21PM

We're investigating an issue where Cosign signing fails for container images and build artifacts in forked projects due to missing claims. Our team is actively working on a fix.

6 months ago - at 07/08/2025 08:07PM

Our team is in the process of reverting the change identified as the root cause of the issue. We will provide our next update once the revert has been deployed and the issue has been successfully mitigated.

6 months ago - at 07/09/2025 08:30AM

The fix has been deployed and we are switching this incident to monitoring. For full details please see https://gitlab.com/gitlab-com/gl-infra/production/-/issues/20137

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