CVE-2026-88860 json
Capgo Authorization Bypass via Stale Channel Permission Overrides
published 2mo ago modified last mo. also EUVD-2026-75410 , GHSA-qfxq-2ch8-hjg9
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository Cap-go/capgo.app. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
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 Attackers can retain channel-specific permissions after their base RBAC access has been revoked to perform unauthorized actions like changing production OTA versions.
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- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- last mo.
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| CNA | 4.0 | 9.3 | 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:X/V:X/RE:X/U:X |
Affected products
- Cap-go capgo.app
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/Cap-go/capgo.app/security/advisories/GHSA-qfxq-2ch8-hjg9
vendor-advisory, advisory
-
vulncheck.com
/advisories/capgo-authorization-bypass-via-stale-channel-permission-overrides
third-party-advisory
Sources
- CVE List CVE-2026-88860
- NVD CVE-2026-88860
- Maintainer advisory GHSA-qfxq-2ch8-hjg9
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of Cap-go/capgo.app published their own advisory on GitHub. Reviewed sources take precedence over it.