Privilege escalation in Capgo
CVE-2026-56216
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-2ff8-7h96-hwfp (vendor-advisory)
- www.vulncheck.com/advisories/capgo-scope-escalation-via-api-key-creation-in-fun… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56216?
- CVE-2026-56216 is a high-severity vulnerability in Capgo, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-06-20.
- How severe is CVE-2026-56216?
- High severity. CVSS v3 base score is 8.8 out of 10.