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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.

PUBLISHED Reserved 2026-06-19 | Published 2026-06-20 | Updated 2026-06-20 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

Improper Privilege Management

Product status

Default status
unaffected

Any version before 12.128.2
affected

12.128.2 (semver)
unaffected

Credits

Judel777 reporter

References

github.com/.../capgo/security/advisories/GHSA-2ff8-7h96-hwfp (GHSA Advisory GHSA-2ff8-7h96-hwfp) vendor-advisory

www.vulncheck.com/...api-key-creation-in-functions-v1-apikey (VulnCheck Advisory: Capgo - Scope Escalation via API Key Creation in /functions/v1/apikey) third-party-advisory

cve.org (CVE-2026-56216)

nvd.nist.gov (CVE-2026-56216)

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