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CVE-2026-100622 – Unauthenticated Deleted-Bundle Restoration/Disclosure – Capgo (capgo.app) through

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Summary

CVE-2026-100622 is a vulnerability in Capgo (capgo.app), a Capacitor/mobile app live-update platform, affecting versions through 12.129.0. The public file read endpoint fails to verify the deletion status of cached bundle artifacts, allowing unauthenticated attackers to retrieve deleted bundles via cached URLs and to trigger restoration of previously deleted objects into R2 storage on cache hits. The issue is tracked under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) and carries a high severity rating.

Technical details

  • Root cause: The public file read endpoint that serves cached bundle artifacts does not check whether the underlying bundle object has been deleted before returning it from cache.
  • Trigger conditions: An attacker who possesses or guesses a previously valid cached URL for a bundle artifact can request it after the bundle has been deleted.
  • Attack vector: Network-based, unauthenticated, requiring no user interaction — an attacker simply issues an HTTP request to the public file read endpoint.
  • Impact: Disclosure of contents from deleted bundles (potentially containing sensitive application code/configuration) and unintended restoration of deleted objects into R2 object storage, undermining the expected deletion/lifecycle guarantees of stored artifacts.

Affected software

  • Capgo (capgo.app), Cap-go — all versions through and including 12.129.0.

Severity

  • CVSS v4.0: 8.7 (High) — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  • CVSS v3.1: 7.5 (High) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Upgrade Capgo to a version released after 12.129.0 that enforces deletion-status checks on the public file read endpoint before serving cached bundle artifacts. Confirm with the vendor’s advisory (GHSA-26×3-6mr7-989p) for the specific fixed release.
  • If no patch can be applied immediately:
    • Invalidate/purge CDN and cache entries for bundle artifacts at the time of deletion so cached URLs cannot be reused to retrieve deleted content.
    • Restrict or monitor access to the public file read endpoint, and audit R2 storage for objects that have been unexpectedly restored after deletion.
    • Rotate or randomize bundle artifact URLs/tokens so that stale cached links cannot be replayed after deletion.

References

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