2025-11-08: 404 when confirming secondary email

404 when confirming secondary email (Severity 4)

Problem: After a recent change, users see a 404 error when trying to confirm a newly added secondary email address in GitLab.

Impact: Users are unable to confirm newly added secondary email addresses, receiving a 404 error when following the confirmation link.

Causes: A recent merge request changed the routing for secondary email confirmations, resulting in users being directed to an invalid path.

Response strategy: We created and approved a revert merge request to restore the previous behavior. The fix will be deployed on Monday (APAC time) after the current deployment lock expires. As a workaround, users can manually change the confirmation link path from '/o/default/emails/confirmation' to '/-/profile/emails/confirmation' to complete the process.

Resolution: The MR has been deployed which resolved the issue.

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This ticket was created to track INC-5565, by incident.io 🔥