Vulnerability in Capgo
CVE-2026-56335
Capgo before 12.128.2 contains an authorization bypass vulnerability where write-scoped API keys can directly mutate protected channel configuration fields through PostgREST by exploiting a null authentication check in the immutability trigger. Attackers with write API keys can modify sensitive channel attributes such as public, allow_emulator, and security-related flags outside intended application routes.
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: 0.004 (35.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-ph9c-vwjq-pqhj (vendor-advisory)
- www.vulncheck.com/advisories/capgo-channel-configuration-mutation-via-write-sco… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56335?
- CVE-2026-56335 is a medium-severity vulnerability in Capgo, classified under Improper Access Control. CVSS score: 6.5/10. Published 2026-07-10.
- How severe is CVE-2026-56335?
- Medium severity. CVSS v3 base score is 6.5 out of 10.