CVE-2026-50168
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk20th percentile — higher than 20% of all known CVEs
Summary
A vulnerability in the @angular/platform-server package allows attackers to bypass host allowlist constraints and direct server-side outgoing requests to arbitrary external endpoints. This issue arises from a parser differential between the strict WHATWG URL parser and the lenient Domino parser, enabling an SSRF attack.
Risk Assessment
The organization is at risk of SSRF attacks, which could lead to unauthorized access to internal network resources, data exfiltration, or using the server to attack other systems.
Recommendation
Immediately update the @angular/platform-server package to version 22.0.0-rc.2, 21.2.15, 20.3.22, or 19.2.23 depending on the Angular branch in use.
Original NVD description (English source)
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23, an issue in the @angular/platform-server package allows remote attackers to bypass host allowlist constraints and direct server-side outgoing requests to arbitrary external endpoints. This occurs due to a parser differential between the strict WHATWG URL parser used for allowlist validation and the lenient Domino URL parser used to initialize the server emulated DOM. When a server-side request contains a malformed URL with a double port structure (e.g., http://evil.com:80:80/path), Node's strict URL.canParse(url) logic returns false and skips host check validation entirely. However, the same malformed URL is later accepted and parsed leniently by Domino's internal parser, which resolves the origin to http://evil.com:80. The Angular SSR HTTP request interceptor (relativeUrlsTransformerInterceptorFn) then resolves all relative backend HTTP requests against this adopted origin, executing the SSRF attack. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.