Vulnerability · Published Feb 20, 2026 · Assigned by GitHub_M
CVE-2026-27190Deno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_process
High 8.1
In plain English
A high-severity OS command injection in deno from denoland. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)2.5%top 15.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.6.8, a command injection vulnerability exists in Deno's node:child_process implementation. This vulnerability is fixed in 2.6.8.
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/denoland/deno/security/advisories/GHSA-hmh4-3xvx-q5hr x_refsource_CONFIRM
- https://github.com/denoland/deno/commit/9132ad958c83a0d0b199de12b69b877f63edab4c x_refsource_MISC
- https://github.com/denoland/deno/releases/tag/v2.6.8 x_refsource_MISC