EUVD-2026-81046
GHSA-w297-93hv-q3cx
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/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 API reachable, low complexity, needs a low-privilege authenticated account (PR:L); deleting ACL grants is high integrity and high availability impact, no confidentiality loss (C:N).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
Yeti through 2.11.0 fails to validate caller permissions in the DELETE /api/v2/rbac/{id} endpoint, allowing users with read access to delete access control relationships. Attackers can revoke the owner's grant and permanently lock legitimate owners out of objects.
AnalysisAI
Authenticated users with only read access can delete RBAC relationships in Yeti through 2.11.0, revoking owner grants and locking legitimate owners out of objects. The flaw resides in the DELETE /api/v2/rbac/{id} endpoint, which omits a caller-permission check (CWE-862). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a valid authenticated Yeti account with at least read access (PR:L) and network reachability to the API. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Genuine but bounded risk. … 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 vendor-released patch identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all Yeti instances up to version 2.11.0 and restrict access to the DELETE /api/v2/rbac/{id} endpoint using a web application firewall or API gateway; review logs for unauthorized deletions and enforce least privilege for authenticated users. …
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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