CVE-2026-88860: Capgo Authorization Bypass via Stale Channel Permission Overrides

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-10 · updated 2026-09-30
Weakness: CWE-863

Description

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 Attackers can retain channel-specific permissions after their base RBAC access has been revoked to perform unauthorized actions like changing production OTA versions.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

Cap-go capgo.app: all versions

References

https://github.com/Cap-go/capgo.app/security/advisories/GHSA-qfxq-2ch8-hjg9
https://www.vulncheck.com/advisories/capgo-authorization-bypass-via-stale-channel-permission-overrides

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