CVE-2025-61785: low-severity vulnerability in denoland deno
Deno's --deny-write check does not prevent permission bypass
Published
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8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.3epss 0.2%
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.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Affected products
denoland · denoRelated CVEs — denoland deno
In the same product, most dangerous first.
CVE-2026-27190HIGHDeno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_processEPSS 2.5%CVE-2024-27933HIGHDeno arbitrary file descriptor close via `op_node_ipc_pipe()` leading to permission prompt bypassEPSS 2.3%CVE-2025-61787HIGHDeno is Vulnerable to Command Injection on Windows During Batch File ExecutionEPSS 2.1%CVE-2026-32260HIGHCommand Injection via incomplete shell metacharacter blocklist in node:child_process (bypass of CVE-2026-27190 fix)EPSS 1.6%CVE-2026-103473CRITICALDeno 2.7.0 through 2.9.7 Command Injection via node:child_processEPSS 1.5%CVE-2022-24783CRITICALSandbox bypass leading to arbitrary code execution in DenoEPSS 1.1%
References
https://github.com/denoland/deno/commit/992e998dfe436cdc9325232759af8be92f11739bhttps://github.com/denoland/deno/pull/30872https://github.com/denoland/deno/releases/tag/v2.2.15https://github.com/denoland/deno/releases/tag/v2.5.3https://github.com/denoland/deno/security/advisories/GHSA-vg2r-rmgp-cgqj