CVE-2026-56323
HIGHCapgo - Unauthenticated Channel Enumeration and App Oracle via GET /channel_self
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-469v-6vw5-hxpq)
https://github.com/Cap-go/capgo/security/advisories/GHSA-469v-6vw5-hxpq
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Unauthenticated Channel Enumeration and App Oracle via GET /channel_self
https://www.vulncheck.com/advisories/capgo-unauthenticated-channel-enumeration-and-app-oracle-via-get-channel-self
Scores
CVSS v3
7.5
EPSS
0.0038
EPSS Percentile
29.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-200
Status
published
Products (2)
Capgo/Capgo
< 12.128.2
Capgo/Capgo
12.128.2
Published
Jun 22, 2026
Tracked Since
Jun 23, 2026