CVE-2026-103473
Deno versions 2.7.0 through 2.9.7 on Windows contain a command injection vulnerability in node:child_process where shell arguments are escaped for the wrong shell type.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Deno versions 2.7.0 through 2.9.7 on Windows contain a command injection vulnerability in node:child_process where shell arguments are escaped for the wrong shell type. Attackers can inject OS commands by passing untrusted arguments with the shell option, allowing arbitrary command execution with Deno process privileges.
- CVSS 4.0
- 9.2 CRITICALCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 1.47% probability · 74th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-78
- Source
- disclosure@vulncheck.com
EPSS moved from 2.7% on 1 October 2026 to 1.5% on 27 October 2026.
References
- https://github.com/denoland/deno
- https://github.com/denoland/deno/blob/0c071246a412575e07423263404a5d13e7ed6aa2/ext/node/polyfills/internal/child_process.ts#L1339
- https://github.com/denoland/deno/blob/0c071246a412575e07423263404a5d13e7ed6aa2/ext/node/polyfills/internal/child_process.ts#L1499
- https://github.com/denoland/deno/pull/36772
- https://www.vulncheck.com/advisories/deno-2.7.0-through-2.9.7-command-injection-via-node-child-process
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.