Medium severity · published Jun 24, 2026
CVE-2026-56310
Cap-go - Authorization Bypass in Organization Members Endpoint via API Key Scope Bypass
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
capgo · Cap-go
before 12.128.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56310
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56310
github.com
https://github.com/Cap-go/capgo/security/advisories/GHSA-q7xv-p34q-v365
www.vulncheck.com
https://www.vulncheck.com/advisories/cap-go-authorization-bypass-in-organization-members-endpoint-via-api-key-scope-bypass
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