CVE-2026-56250 Capgo CVE debrief

Who should care

Users of Capgo versions before 12.128.2, particularly those with administrative access, should be aware of this vulnerability and take immediate action to update to the latest version. Additionally, security teams and vulnerability management teams should review the affected scope and severity to determine the necessary course of action.

Technical summary

The vulnerability exists in Capgo, a platform that allows upload-scoped API keys to modify the mutable app_versions.r2_path field through PostgREST. This enables retargeting to arbitrary R2 bundle objects. Attackers can patch r2_path to point to victim objects, soft-delete the attacker-controlled version, and trigger the on_version_update cleanup function to delete the victim R2 object, causing denial of service and bundle availability disruption. The vulnerability has a CVSS score of 8.7 and is considered High severity.

Defensive priority

High

Recommended defensive actions

• Update Capgo to version 12.128.2 or later
• Review and restrict API key permissions
• Monitor for suspicious activity
• Implement additional security measures to prevent similar attacks
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record was published on 2026-07-08T14:17:15.673Z and has not been modified since then. The NVD entry is currently Deferred. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The vulnerability exists in Capgo, a platform that allows upload-scoped API keys to modify the mutable app_versions.r2_path field through PostgREST.

Official resources