Auth bypass in Cap-Go Capgo.app
CVE-2026-100626
capgo through 12.128.2 contains an insecure direct object reference vulnerability in the PUT /app/:appId endpoint that accepts attacker-controlled icon storage paths. Authenticated users can supply arbitrary paths in the private images bucket and obtain service-role-signed URLs valid for 7 days to read cross-tenant objects including user avatars, organization logos, and app icons without authorization.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (7.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-84xq-4rv7-p252) (vendor-advisory)
- VulnCheck Advisory: capgo through 12.128.2 IDOR via PUT /app icon endpoint (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100626?
- CVE-2026-100626 is a medium-severity vulnerability in Cap-Go Capgo.app, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-09-26.
- How severe is CVE-2026-100626?
- Medium severity. CVSS v3 base score is 4.3 out of 10.