CVE-2025-61786

Summary

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.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://github.com/denoland/deno/commit/1ab2268c0bcbf9b0468e0e36963f77f8c31c73ec ↗

Additional information

• NVD record
• https://github.com/denoland/deno/commit/1ab2268c0bcbf9b0468e0e36963f77f8c31c73ecPatch
• https://github.com/denoland/deno/pull/30876Patch
• https://github.com/denoland/deno/security/advisories/GHSA-qq26-84mh-26j9Advisory
• https://github.com/denoland/deno/releases/tag/v2.2.15
• https://github.com/denoland/deno/releases/tag/v2.5.3