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Vulnerability record · CVE-2026-88860 · published 10 September 2026

CVE-2026-88860: Incorrect authorization vulnerability

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 Attackers can retain channel-specific permissions after their base RBAC access has been revoked to perform unauthorized actions like changing production OTA versions.

9.3 CVSS 4.0 Critical EPSS 0.27% · top 82.3% CWE-863 · Incorrect authorization Deferred
9.3CVSS 4.0 base score
0.27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
18 Sep 2026Last modified by NVD

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 Attackers can retain channel-specific permissions after their base RBAC access has been revoked to perform unauthorized actions like changing production OTA versions.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-88860), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.