by Kastro
Paper/Archive/CVE-2026-88860

CVE-2026-88860

Cap-go capgo.app — Capgo Authorization Bypass via Stale Channel Permission Overrides

EPSS 0.3%CVSS 9.3
critical.is priorityof 100
32
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 19.7.197 × 203.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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 Attackers can retain channel-specific permissions after their base RBAC access has been revoked to perform unauthorized actions like changing production OTA versions.

Affected

ProductAffectedFixed inSource
capgo.app≤ *–CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
VulnCheck (CNA)6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorygithub.com/Cap-go/capgo.app/security/advisories/GHSA-qfxq-2ch8-hjg9writeupvulncheck.com/advisories/capgo-authorization-bypass-via-stale-channel-permission-overrides