What’s Vulnerable › Vulnerabilities

CVE-2025-61787: Deno is Vulnerable to Command Injection on Windows During Batch File Execution

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-10-08 · updated 2026-10-08
• Weakness: CWE-77

Description

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Versions prior to 2.5.3 and 2.2.15 are vulnerable to Command Line Injection attacks on Windows when batch files are executed. In Windows, ``CreateProcess()`` always implicitly spawns ``cmd.exe`` if a batch file (.bat, .cmd, etc.) is being executed even if the application does not specify it via the command line. This makes Deno vulnerable to a command injection attack on Windows. Versions 2.5.3 and 2.2.15 fix the issue.

Affected products

• denoland deno: through 2.2.15; from 2.3.0 before 2.5.3 — fixed in 2.5.3

How to fix

Upgrade to a fixed version: denoland deno 2.5.3. Check the vendor advisory for mitigations.

References

• https://github.com/denoland/deno/commit/8a0990ccd37bafd8768176ca64b906ba2da2d822
• https://github.com/denoland/deno/pull/30818
• https://github.com/denoland/deno/releases/tag/v2.2.15
• https://github.com/denoland/deno/releases/tag/v2.5.3
• https://github.com/denoland/deno/security/advisories/GHSA-m2gf-x3f6-8hq3

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