Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, `Deno.FsFile.prototype.stat` and `Deno.FsFile.prototype.statSync` are not limited by the permission model check `--deny-read=./`. It's possible to retrieve stats from files that the user do not have explicit read access to (the script is executed with `--deny-read=./`). Similar APIs like `Deno.stat` and `Deno.statSync` require `allow-read` permission, however, when a file is opened, even with file-write only flags and deny-read permission, it's still possible to retrieve file stats, and thus bypass the permission model. Versions 2.5.3 and 2.2.15 fix the issue.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/denoland/deno/commit/1ab2268c0bcbf9b0468e0e36963f77f8c31c73ec Patch
- https://github.com/denoland/deno/pull/30876 Issue Tracking, Patch
- https://github.com/denoland/deno/security/advisories/GHSA-qq26-84mh-26j9 Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 3.3 · denoNVD modified 2026-10-08 13:10
Affected (CPE criteria) 1
cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*
References 5
- https://github.com/denoland/deno/commit/1ab2268c0bcbf9b0468e0e36963f77f8c31c73ec Patch
- https://github.com/denoland/deno/pull/30876 Issue Tracking, Patch
- https://github.com/denoland/deno/releases/tag/v2.2.15 Release Notes
- https://github.com/denoland/deno/releases/tag/v2.5.3 Release Notes
- https://github.com/denoland/deno/security/advisories/GHSA-qq26-84mh-26j9 Exploit, Vendor Advisory