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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.

PUBLISHED Reserved 2025-09-30 | Published 2025-10-08 | Updated 2025-10-08 | Assigner GitHub_M




LOW: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-266: Incorrect Privilege Assignment

Product status

>= 2.3.0, < 2.5.3
affected

< 2.2.15
affected

References

github.com/...d/deno/security/advisories/GHSA-vg2r-rmgp-cgqj

github.com/denoland/deno/pull/30872

github.com/...ommit/992e998dfe436cdc9325232759af8be92f11739b

github.com/denoland/deno/releases/tag/v2.2.15

github.com/denoland/deno/releases/tag/v2.5.3

cve.org (CVE-2025-61785)

nvd.nist.gov (CVE-2025-61785)

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