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is a distributed object storage system built in Rust. Prior to 1.0.0-alpha.94, all four notification target admin API endpoints in `rustfs/src/admin/handlers/event.rs` use a `check_permissions` helper that validates authentication only (access key + session token), without performing any admin-action authorization via `validate_admin_request`. Every other admin handler in the codebase correctly calls `validate_admin_request` with a specific `AdminAction`. This is the only admin handler file that skips authorization. A non-admin user can overwrite a shared admin-defined notification target by name, causing subsequent bucket events to be delivered to an attacker-controlled endpoint. This enables cross-user event interception and audit evasion. 1.0.0-alpha.94 contains a patch.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.3,"severity":"high","source":"NVD: security-advisories@github.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L","version":"3.1"}],"modifiedAt":1794438600263,"publishedAt":1776892628877,"references":[{"source":"security-advisories@github.com","tags":["Product","Release Notes"],"url":"https://github.com/rustfs/rustfs/releases/tag/1.0.0-alpha.94"},{"source":"security-advisories@github.com","tags":["Mitigation","Vendor Advisory"],"url":"https://github.com/rustfs/rustfs/security/advisories/GHSA-pfcq-4gjr-6gjm"},{"source":"OSV / GitHub Security Advisories","tags":["advisory"],"url":"https://github.com/advisories/GHSA-pfcq-4gjr-6gjm"},{"source":"OSV / GitHub Security Advisories","tags":["osv"],"url":"https://osv.dev/vulnerability/GHSA-pfcq-4gjr-6gjm"}],"remediation":[],"revision":"a3362b91736aeaad8639cea919cd5fa9619b5406a9ed19193c120178fb83b7a1","sources":[{"modifiedAt":1794438600263,"name":"NVD","retrievedAt":1794442730356,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40937"},{"modifiedAt":1777997354768,"name":"OSV / GitHub Security Advisories","retrievedAt":1794442731674,"url":"https://osv.dev/vulnerability/GHSA-pfcq-4gjr-6gjm"}],"ssvc":{"assessedAt":1776951666202,"automatable":"no","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"total"},"status":"published","title":"CVE-2026-40937","updatedAt":1794442731674}