Auth bypass in Capgo
CVE-2026-56220
Capgo before 12.128.2 contains an authorization bypass vulnerability in the public.manifest INSERT policy that allows read-only org members to insert OTA manifest rows. Attackers with read-only org access can inject malicious manifest entries with arbitrary s3_path values that are served to devices via the unauthenticated /updates endpoint, enabling OTA metadata poisoning and potential malicious asset delivery.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (26.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% 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
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-vmgg-crr8-887p (vendor-advisory)
- www.vulncheck.com/advisories/capgo-unauthorized-manifest-insertion-via-read-onl… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56220?
- CVE-2026-56220 is a medium-severity vulnerability in Capgo, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-07-08.
- How severe is CVE-2026-56220?
- Medium severity. CVSS v3 base score is 6.5 out of 10.