CVE-2026-56216: Capgo - Scope Escalation via API Key Creation in /functions/v1/apikey

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-20 · updated 2026-06-22
Weakness: CWE-269

Description

Capgo before 12.128.2 contains a scope escalation vulnerability in the POST /functions/v1/apikey endpoint that allows app-limited API keys to mint unrestricted keys by setting empty limits. Attackers with a compromised app-limited key can create an unrestricted key with org-wide access to resources like app listings and other protected endpoints.

Affected products

Capgo: before 12.128.2 — fixed in 12.128.2

How to fix

Upgrade to a fixed version: Capgo 12.128.2. Check the vendor advisory for mitigations.

References

https://github.com/Cap-go/capgo/security/advisories/GHSA-2ff8-7h96-hwfp
https://www.vulncheck.com/advisories/capgo-scope-escalation-via-api-key-creation-in-functions-v1-apikey
https://github.com/Cap-go/capgo/security/advisories/GHSA-2ff8-7h96-hwfp

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