Deno’s –deny-read check does not prevent permission bypass_CVE-2025-61786

3.3 / 10

LOW

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

Description

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.

Basic Information

ID CVE-2025-61786

Source GitHub_M

Published Oct 8, 2025 at 00:49

Modified Oct 8, 2025 at 00:56

Affected Product

Vendor denoland

Product deno

Version >= 2.3.0, < 2.5.3

Affected Versions denoland deno >= 2.3.0, < 2.5.3
denoland deno < 2.2.15

CWE Classification

CWE-269

References

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    "published": "2025-10-08T00:49:42.824Z",
    "modified": "2025-10-08T00:56:32.591Z",
    "type": "cve",
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