CVE-2026-54753

Nx: `nx graph` dev server permissive CORS policy

State: Published
Severity: 5.9 Medium
Published: Jun 26, 2026
Updated: Jun 26, 2026
Reserved: Jun 15, 2026

Description

Nx is a monorepo solution for TypeScript and polyglot codebases. From 17.0.4 until 22.7.2 and 23.0.0-beta.2, the local HTTP server started by nx graph sent Access-Control-Allow-Origin: * on every response, letting any website a developer visited read the server's responses cross-origin — including the full project graph and the output of the /help endpoint, which runs a target's configured help command. The practical impact is typically cross-origin information disclosure, but can be arbitrary command injection in rare cases. This vulnerability is fixed in 22.7.2 and 23.0.0-beta.2.

Scores

CVSS	Score	Vector	Source
3.1	5.9 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N	GitHub_M

Weaknesses

CWE-749 Exposed Dangerous Method or Function
CWE-942 Permissive Cross-domain Policy with Untrusted Domains

Affected Products

Product	Versions
nxnrwl	>= 17.0.4, < 22.7.2Affected >= 23.0.0-beta.0, < 23.0.0-beta.2Affected

References

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