EUVD-2026-38750Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible endpoint (AV:N), no special conditions (AC:L), requires a valid API key (PR:L), and impact is limited to partial confidentiality of membership metadata (C:L) with no integrity or availability effect.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Authorization bypass in Capgo (cap-go before 12.128.2) allows holders of org-limited API keys to read membership data from organizations outside their assigned scope by calling the GET /organization/members endpoint without proper enforcement of limited_to_orgs restrictions. Exposed fields include uid, email, image_url, role, and is_tmp - sufficient to enumerate organization membership and email addresses across tenants. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires possession of a valid org-limited API key for the target Capgo instance - the attacker must already be a credentialed participant in at least one organization on the platform. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N) accurately reflects the threat model: network-reachable, low complexity, but requires a valid org-limited API key (PR:L), and impact is limited to confidentiality of membership metadata. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained a valid org-limited API key - for example, by compromising a developer account in Organization A - crafts a GET /organization/members request substituting the ID of a different, unrelated Organization B. The server fails to check whether Organization B falls within the key's limited_to_orgs scope and returns the full membership list including email addresses and roles for Organization B. … |
| Remediation | Upgrade Capgo to version 12.128.2 or later, which resolves the authorization bypass by correctly enforcing limited_to_orgs scope checks on the GET /organization/members endpoint. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-285 – Improper Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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