CVE-2025-61785

3.3 LOW
Published: October 08, 2025 Modified: October 16, 2025

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/denoland/deno/pull/30872
Source: security-advisories@github.com
Issue Tracking Patch
https://github.com/denoland/deno/releases/tag/v2.2.15
Source: security-advisories@github.com
Release Notes
https://github.com/denoland/deno/releases/tag/v2.5.3
Source: security-advisories@github.com
Release Notes
https://github.com/denoland/deno/security/advisories/GHSA-vg2r-rmgp-cgqj
Source: security-advisories@github.com
Exploit Vendor Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
3.3 / 10.0
EPSS (Exploit Probability)
0.0%
3th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

deno