CVE-2026-56300
HIGHCapgo - Unauthenticated API Key Validity and Permission Oracle via RPC Functions
Title source: cnaDescription
Capgo before 12.128.2 contains unauthenticated security definer RPC functions get_user_id and get_org_perm_for_apikey that expose API key validity oracles and user UUID disclosure. Unauthenticated attackers using the public API key can validate leaked keys, enumerate users and apps, and determine permission levels, significantly increasing the actionability of compromised credentials.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-7r6g-whg3-5mm4)
https://github.com/Cap-go/capgo/security/advisories/GHSA-7r6g-whg3-5mm4
Third Party Advisory third-party-advisory
VulnCheck Advisory: Capgo - Unauthenticated API Key Validity and Permission Oracle via RPC Functions
https://www.vulncheck.com/advisories/capgo-unauthenticated-api-key-validity-and-permission-oracle-via-rpc-functions
Scores
CVSS v3
7.5
EPSS
0.0035
EPSS Percentile
26.9%
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 30, 2026
Tracked Since
Jul 01, 2026