EUVD-2026-67253
GHSA-3x65-v85x-f94h
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Admin credentials required (PR:H); network-reachable API (AV:N); no complexity barrier; full CIA impact once superadmin obtained.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
5DescriptionCVE.org
An issue in the inviteController.js component in Bluewave Labs Checkmate <=3.3.0 allows remote authenticated administrators to escalate privileges to superadmin via the role parameter to the /api/v1/invite endpoint.
AnalysisAI
Privilege escalation in Bluewave Labs Checkmate <=3.3.0 allows authenticated administrators to self-elevate to the superadmin role by supplying an arbitrary role value via the role parameter in the POST /api/v1/invite API endpoint, handled by inviteController.js. The flaw stems from improper privilege management (CWE-269): the invite handler trusts the caller-supplied role field without enforcing that admins cannot grant themselves or others a higher tier than their own. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated administrator session within the target Checkmate deployment (PR:H per CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 7.2 is technically correct given the PR:H requirement - an attacker must already hold administrator credentials before exploitation is possible, which substantially limits the attack surface compared to unauthenticated flaws. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No specific patched version is identified in the available data - the NVD entry and researcher references do not cite a fixed release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: identify all Checkmate deployments in production and document their versions; implement network-level restrictions on the POST /api/v1/invite endpoint if operationally feasible. …
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
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