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.
Affected products
deno: deno
References5
- github.com/denoland/deno/security/advisories/GHSA-qq26-84mh-26j9 ExploitVendor Advisory
- github.com/denoland/deno/commit/1ab2268c0bcbf9b0468e0e36963f77f… Patch
- github.com/denoland/deno/pull/30876 Issue TrackingPatch
- github.com/denoland/deno/releases/tag/v2.2.15 Release Notes
- github.com/denoland/deno/releases/tag/v2.5.3 Release Notes
Metrics
- CVSS 3.1
-
3.3
LOW
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 10 · as of 9 November 2026
- CWE
- CWE-269
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