Auth bypass in Cap-Go Capgo.app
CVE-2026-88860
Capgo fails to clean up channel permission overrides when a user's last organization role binding is deleted, leaving stale overrides active. Attackers can retain channel-specific permissions after their base RBAC access has been revoked to perform unauthorized actions like changing production OTA versions.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (19.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/Cap-go/capgo.app/security/advisories/GHSA-qfxq-2ch8-hjg9 (vendor-advisory)
- www.vulncheck.com/advisories/capgo-authorization-bypass-via-stale-channel-permi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-88860?
- CVE-2026-88860 is a medium-severity vulnerability in Cap-Go Capgo.app, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-09-10.
- How severe is CVE-2026-88860?
- Medium severity. CVSS v3 base score is 6.3 out of 10.