Information disclosure in Capgo
CVE-2026-56323
Capgo before 12.128.2 contains an information disclosure vulnerability in the /functions/v1/channel_self endpoint that allows unauthenticated attackers to enumerate non-public channel names and determine app existence and subscription status. Remote attackers can send GET requests with arbitrary app_id parameters to disclose internal rollout channels, enumerate valid applications across tenants, and leak billing status without authentication or device binding.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-469v-6vw5-hxpq (vendor-advisory)
- www.vulncheck.com/advisories/capgo-unauthenticated-channel-enumeration-and-app-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56323?
- CVE-2026-56323 is a high-severity vulnerability in Capgo, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-06-22.
- How severe is CVE-2026-56323?
- High severity. CVSS v3 base score is 7.5 out of 10.