{"id":"CVE-2026-104871","revision":"769b6fd1292f4c9eaf28ae066576e10c","records":[{"revision":"769b6fd1292f4c9eaf28ae066576e10c","observedAt":"2026-10-25T04:17:29.458+00:00","statement":{"source":"nvd","id":"CVE-2026-104871","aliases":[],"title":"The Angular SSR is a server-rise rendering tool for Angular applications. Prior to versions 20.3.36, 21.2.23, and 22.1.7, the CommonEngine retrieveSSGPage prerendered-page retrieval logic in @angular/ssr/node, and in @angular/ssr for versio…","description":"The Angular SSR is a server-rise rendering tool for Angular applications. Prior to versions 20.3.36, 21.2.23, and 22.1.7, the CommonEngine retrieveSSGPage prerendered-page retrieval logic in @angular/ssr/node, and in @angular/ssr for versions 17 through 18, accepts a relative request URL containing a backslash parent-traversal segment on Windows. The non-special resolve:// URL base preserves the backslash, path.join interprets it as a Windows separator, and the pagePath.startsWith(normalize(publicPath)) check incorrectly accepts a sibling output directory whose name shares the configured public-directory prefix. An unauthenticated requester can therefore retrieve a sibling prerendered HTML page when that page contains the Angular SSG marker. The issue is limited to Windows deployments that pass relative request URLs to CommonEngine.render, have a prefix-sharing sibling output directory, and contain qualifying prerendered Angular HTML; it does not provide arbitrary file read. This issue is fixed in versions 20.3.36, 21.2.23, and 22.1.7.","state":0,"publishedAt":"2026-10-02T20:17:00.91+00:00","modifiedAt":"2026-10-06T16:00:36.547+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.3,"severity":"MEDIUM"}],"references":["https://github.com/angular/angular-cli/commit/645e41a47d21b7651837a4250de99af0509626e2","https://github.com/angular/angular-cli/commit/70748ca8e76fe4b42798719410336119d943e755","https://github.com/angular/angular-cli/commit/bb72145f9ab45aee29f523236b3a25cd0813a841","https://github.com/angular/angular-cli/commit/c3e5982e49705f0f6a913cb94622b4c555d2d914","https://github.com/angular/angular-cli/releases/tag/v20.3.36","https://github.com/angular/angular-cli/releases/tag/v21.2.23","https://github.com/angular/angular-cli/releases/tag/v22.1.7","https://github.com/angular/angular-cli/security/advisories/GHSA-7g7c-h8rr-7p6q"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104871","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-22"],"productCriteria":[],"sourceDates":{"published":"2026-10-02T20:17:00.910","lastModified":"2026-10-06T16:00:36.547"},"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-2026-104871","identifiers":["CVE-2026-104871"]},"retained":false,"historicalAffected":[]}],"coverage":[]}