{"cve":"CVE-2026-41423","nvd":{"published":"2026-05-08T14:16:33.260","modified":"2026-06-17T10:46:42.270","status":"Analyzed","description":"Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.21, 20.3.19, 21.2.9, and 22.0.0-next.8, a Server-Side Request Forgery (SSRF) vulnerability exists in @angular/platform-server due to improper handling of URLs during Server-Side Rendering (SSR). When an attacker sends a request such as GET /\\evil.com/ HTTP/1.1 the server engine (Express, etc.) passes the URL string to Angular’s rendering functions. Because the URL parser normalizes the backslash to a forward slash for HTTP/HTTPS schemes, the internal state of the application is hijacked to believe the current origin is evil.com. This misinterpretation tricks the application into treating the attacker’s domain as the local origin. Consequently, any relative HttpClient requests or PlatformLocation.hostname references are redirected to the attacker controlled server, potentially exposing internal APIs or metadata services. This issue has been patched in versions 19.2.21, 20.3.19, 21.2.9, and 22.0.0-next.8.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-918"],"references":["https://github.com/angular/angular/commit/ede7c58a2aa13fdccc8f0b67ce93ba1c11749412","https://github.com/angular/angular/pull/68194","https://github.com/angular/angular/security/advisories/GHSA-45q2-gjvg-7973"],"products":["angular:angular"],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-41423","score":0.00305,"percentile":0.23272,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-45q2-gjvg-7973","url":"https://osv.dev/vulnerability/GHSA-45q2-gjvg-7973","summary":"Angular: SSRF via protocol-relative and backslash URLs in Angular Platform-Server","modified":"2026-05-12T17:16:33.607099Z","packages":[{"ecosystem":"npm","name":"@angular/platform-server","purl":"pkg:npm/%40angular/platform-server","ranges":[">=22.0.0-next.0 <22.0.0-next.8"],"fixed":["22.0.0-next.8"]},{"ecosystem":"npm","name":"@angular/platform-server","purl":"pkg:npm/%40angular/platform-server","ranges":[">=21.0.0-next.0 <21.2.9"],"fixed":["21.2.9"]},{"ecosystem":"npm","name":"@angular/platform-server","purl":"pkg:npm/%40angular/platform-server","ranges":[">=20.0.0-next.0 <20.3.19"],"fixed":["20.3.19"]},{"ecosystem":"npm","name":"@angular/platform-server","purl":"pkg:npm/%40angular/platform-server","ranges":[">=19.0.0-next.0 <19.2.21"],"fixed":["19.2.21"]},{"ecosystem":"npm","name":"@angular/platform-server","purl":"pkg:npm/%40angular/platform-server","ranges":["<=18.2.14"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}