CVE-2025-61785

Summary

Deno is a JavaScript, TypeScript, and WebAssembly runtime. In versions prior to 2.5.3 and 2.2.15, `Deno.FsFile.prototype.utime` and `Deno.FsFile.prototype.utimeSync` are not limited by the permission model check `--deny-write=./`. It's possible to change to change the access (`atime`) and modification (`mtime`) times on the file stream resource even when the file is opened with `read` only permission (and `write`: `false`) and file write operations are not allowed (the script is executed with `--deny-write=./`). Similar APIs like `Deno.utime` and `Deno.utimeSync` require `allow-write` permission, however, when a file is opened, even with read only flags and deny-write permission, it's still possible to change the access (`atime`) and modification (`mtime`) times, 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:N/I:L/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/992e998dfe436cdc9325232759af8be92f11739b ↗

Additional information

• NVD record
• https://github.com/denoland/deno/commit/992e998dfe436cdc9325232759af8be92f11739bPatch
• https://github.com/denoland/deno/pull/30872Patch
• https://github.com/denoland/deno/security/advisories/GHSA-vg2r-rmgp-cgqjAdvisory
• https://github.com/denoland/deno/releases/tag/v2.2.15
• https://github.com/denoland/deno/releases/tag/v2.5.3