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CVE-2026-56252 Capgo CVE debrief

A scope isolation vulnerability was discovered in Capgo's POST /webhooks/test endpoint. This vulnerability allows app-scoped API keys to invoke org-scoped webhook operations, potentially bypassing authorization checks. The vulnerability has a CVSS score of 5.3, indicating a medium severity. Users of Capgo, especially those with app-scoped credentials, should be aware of this vulnerability and take necessary precautions. The vulnerability exists due to insufficient scope isolation in the affected endpoint, allowing unauthorized actions. The CVE record was published on 2026-07-12T12:16:44.867Z and has not been modified since then.

Vendor
Capgo
Product
Unknown
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-12
Original CVE updated
2026-07-12
Advisory published
2026-07-12
Advisory updated
2026-07-12

Who should care

Users of Capgo, especially those with app-scoped credentials, should be aware of this vulnerability and take necessary precautions. This includes reviewing and restricting app-scoped API key usage, monitoring webhook deliveries for suspicious activity, and applying the patch or updating to version 12.128.2 or later. Security teams and operators managing Capgo deployments should prioritize patching or mitigating this vulnerability.

Technical summary

The vulnerability exists in the POST /webhooks/test endpoint of Capgo. App-scoped API keys can be used to invoke org-scoped webhook operations, which could lead to unauthorized actions. The CVSS score for this vulnerability is 5.3, indicating a medium severity. This vulnerability can be mitigated by applying the patch or updating to version 12.128.2 or later. Users should review and restrict app-scoped API key usage and monitor webhook deliveries for suspicious activity.

Defensive priority

Medium priority should be given to patching or mitigating this vulnerability, as it could lead to unauthorized webhook deliveries.

Recommended defensive actions

  • Apply the patch or update to version 12.128.2 or later
  • Review and restrict app-scoped API key usage
  • Monitor webhook deliveries for suspicious activity
  • 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
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-12T12:16:44.867Z and has not been modified since then. The NVD entry is currently in the 'Received' status. This information is based on the supplied source corpus. Defenders should verify the accuracy of this information with official sources. The scope isolation vulnerability in Capgo's POST /webhooks/test endpoint allows app-scoped API keys to invoke org-scoped webhook operations, potentially bypassing authorization checks. Users should review the official CVE record and NVD entry for further details.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-12T12:16:44.867Z and has not been modified since then.