{"id":"CVE-2026-54753","revision":null,"records":[{"revision":"da672f14fa44482fba36fb517a19917e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-54753","aliases":[],"title":"Nx: `nx graph` dev server permissive CORS policy","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.","state":0,"publishedAt":"2026-06-26T18:13:34.371+00:00","modifiedAt":"2026-06-26T19:09:33.257+00:00","affected":[{"ecosystem":"Vendor product","name":"nx","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"nrwl\",\n                    \"product\": \"nx\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 17.0.4, < 22.7.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 23.0.0-beta.0, < 23.0.0-beta.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/nrwl/nx/security/advisories/GHSA-g2r8-wvmj-jf5w","https://github.com/nrwl/nx/pull/35494"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-54753","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-54753","identifiers":["CVE-2026-54753"]},"retained":false,"historicalAffected":[]},{"revision":"f7d96fc5a6734ae680081ad685121a7f","observedAt":"2026-11-07T12:31:02.536+00:00","statement":{"source":"euvd","id":"EUVD-2026-39831","aliases":["CVE-2026-54753","GHSA-g2r8-wvmj-jf5w"],"title":"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 vi…","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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N","score":5.9,"severity":null}],"references":["https://github.com/nrwl/nx/security/advisories/GHSA-g2r8-wvmj-jf5w","https://github.com/nrwl/nx/pull/35494"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-39831","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 26, 2026, 6:13:34 PM","dateUpdated":"Jun 26, 2026, 7:09:33 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-39831","identifiers":["EUVD-2026-39831","CVE-2026-54753","GHSA-g2r8-wvmj-jf5w"]},"retained":false,"historicalAffected":[]},{"revision":"d11425db611244efaef3737409f1ba81","observedAt":"2026-10-27T14:13:40.804+00:00","statement":{"source":"nvd","id":"CVE-2026-54753","aliases":[],"title":"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 vi…","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.","state":0,"publishedAt":"2026-06-26T19:16:43.937+00:00","modifiedAt":"2026-10-25T17:10:00.197+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/nrwl/nx/pull/35494","https://github.com/nrwl/nx/security/advisories/GHSA-g2r8-wvmj-jf5w"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54753","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-749","CWE-942"],"productCriteria":[],"sourceDates":{"published":"2026-06-26T19:16:43.937","lastModified":"2026-10-25T17:10:00.197"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-54753","identifiers":["CVE-2026-54753"]},"retained":false,"historicalAffected":[]},{"revision":"dc1a1ab2ac9e4a8fa1a659b4453eea62","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-g2r8-wvmj-jf5w","aliases":["CVE-2026-54753"],"title":"`nx graph` dev server permissive CORS policy","description":"## Summary\n\nThe 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.\n\n## Severity\n\n\nExploitation requires the developer to be running `nx graph` and to visit an attacker page. Any execution beyond benign help commands also requires a malicious target to already be present in the workspace (see Details).\n\n## Affected & Patched Versions\n\nPackage: `nx` (npm).\n\n- **Affected:** `>= 17.0.4, < 22.7.2` and `>= 23.0.0-beta.0, < 23.0.0-beta.2`\n- **Patched:** `22.7.2`+ (backport) and `23.0.0` (first in `23.0.0-beta.2`)\n\nThe wildcard CORS header was introduced in `17.0.4`; the `/help` execution endpoint in `19.4.0`. **The `21.x` line is not patched** — `21.x` users should upgrade to `22.7.2` or later.\n\n## Details\n\n`nx graph` starts a local server (default `http://127.0.0.1:4211`). Before the fix, its request handler set a wildcard CORS header on every response:\n\n```ts\nres.setHeader('Access-Control-Allow-Origin', '*');\n```\n\nThe `/help` endpoint runs a target's configured command:\n\n```ts\nconst command = target.metadata?.help?.command;\nreturn execSync(command, { cwd: target.options?.cwd ?? workspaceRoot }).toString();\n```\n\nA `GET /help` is a CORS \"simple request\", so a malicious page could `fetch()` it with no preflight, and the wildcard header let the page read the result. This exposes the project graph (project names, file paths, dependencies, build configuration) and the output of any configured help command.\n\nThe command is not attacker-controlled through the request — it comes from the workspace's project configuration, and first-party plugins (jest, vite, cypress) populate it with benign, read-only help commands. For `/help` to run anything malicious, a target carrying a malicious `help.command` must already exist in the project graph, which can only be introduced by **installing a malicious package** or by **altering the workspace's own code/configuration** — both of which already grant code execution independent of this flaw.\n\nThe fix ([#35494](https://github.com/nrwl/nx/pull/35494)) removes the header; the browser's same-origin policy then blocks cross-origin reads.\n\n## References\n\n- Fix: [nrwl/nx#35494](https://github.com/nrwl/nx/pull/35494)\n- Introduced: [nrwl/nx#20744](https://github.com/nrwl/nx/pull/20744) (CORS), [nrwl/nx#26629](https://github.com/nrwl/nx/pull/26629) (`/help`)\n\n## Credits\n\nThanks to Nozomu Sasaki (Paul) ([@morimori-dev](https://github.com/morimori-dev)) for finding and responsibly reporting this issue.","state":0,"publishedAt":"2026-07-31T16:50:24+00:00","modifiedAt":"2026-07-31T17:00:20.6262534+00:00","affected":[{"ecosystem":"npm","name":"nx","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"17.0.4"},{"kind":"fixed","version":"22.7.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"nx","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"23.0.0-beta.0"},{"kind":"fixed","version":"23.0.0-beta.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/nrwl/nx/security/advisories/GHSA-g2r8-wvmj-jf5w","https://nvd.nist.gov/vuln/detail/CVE-2026-54753","https://github.com/nrwl/nx/pull/35494","https://github.com/nrwl/nx/commit/7620c1ffe598086ce5e66457c7e6e38799bb499d","https://github.com/nrwl/nx/commit/e59122c5569cf201561b9995ce4e34a304f4fb03","https://github.com/nrwl/nx","https://github.com/nrwl/nx/releases/tag/22.7.2"],"sourceUrl":"https://github.com/advisories/GHSA-g2r8-wvmj-jf5w","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-g2r8-wvmj-jf5w","identifiers":["GHSA-g2r8-wvmj-jf5w","CVE-2026-54753"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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