Service status
Incident
Elevated HTTP 422 errors on Photon Optimizer
- Affects
- Photon Optimizer
- Start
- 29 Oct 2026, 12:19 CET
- End
- 29 Oct 2026, 13:09 CET
- Resolved
- 29 Oct 2026, 15:32 CET
-
We identified an issue with Photon Optimizer causing elevated HTTP 422 errors due to an HTTP/2 protocol mismatch between origin and optimizer servers following recent security-related changes.
The issue affected fewer than 0.5% of cache-miss requests and has been resolved by updating the affected library to a version containing the fix.