CVE-2026-56310
MEDIUMCap-go - Authorization Bypass in Organization Members Endpoint via API Key Scope Bypass
Title source: cnaDescription
Cap-go before 12.128.2 contains an authorization bypass vulnerability in the GET /organization/members endpoint that allows org-limited API keys to bypass limited_to_orgs restrictions. Attackers with org-limited API keys can read membership data including uid, email, image_url, role, and is_tmp from organizations outside their assigned scope.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-q7xv-p34q-v365)
https://github.com/Cap-go/capgo/security/advisories/GHSA-q7xv-p34q-v365
Third Party Advisory third-party-advisory
VulnCheck Advisory: Cap-go - Authorization Bypass in Organization Members Endpoint via API Key Scope Bypass
https://www.vulncheck.com/advisories/cap-go-authorization-bypass-in-organization-members-endpoint-via-api-key-scope-bypass
Scores
CVSS v3
4.3
EPSS
0.0018
EPSS Percentile
8.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-285
Status
published
Products (2)
Cap-go/capgo
< 12.128.2
Cap-go/capgo
12.128.2
Published
Jun 24, 2026
Tracked Since
Jun 24, 2026