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Critical ImpactLast updated: Refreshed just now

Duplicated values in X-Forwarded-For header

Started
Resolved

Timeline

  1. Resolved

    This incident has been resolved.

  2. Updated

    We are continuing to work on a fix for this issue. A new expected roll out is ~2.5 hours - ETA ~08:30 UTC.

  3. Updated

    We are continuing to work on a fix for this issue.

  4. Updated

    We are continuing to work on a fix for this issue. A fix is expected to roll out over the next ~11 hours - ETA ~07:00 UTC 29 Apr. 2026.

  5. Identified

    The issue has been identified and a fix is being implemented.

  6. Updated

    We are continuing to investigate this issue.

  7. Investigating

    Cloudflare is investigating duplicated values in the X-Forwarded-For header. Origins depending on this header may exhibit unexpected behavior.