CVE-2026-41423

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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\u2019s 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\u2019s 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."}, {"lang": "es", "value": "Angular es una plataforma de desarrollo para construir aplicaciones web m\u00f3viles y de escritorio usando TypeScript/JavaScript y otros lenguajes. Antes de las versiones 19.2.21, 20.3.19, 21.2.9 y 22.0.0-next.8, existe una vulnerabilidad de falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) en @angular/platform-server debido a un manejo inadecuado de las URL durante la renderizaci\u00f3n del lado del servidor (SSR). Cuando un atacante env\u00eda una petici\u00f3n como GET /\\evil.com/ HTTP/1.1, el motor del servidor (Express, etc.) pasa la cadena de la URL a las funciones de renderizaci\u00f3n de Angular. Debido a que el analizador de URL normaliza la barra invertida a una barra diagonal para los esquemas HTTP/HTTPS, el estado interno de la aplicaci\u00f3n es secuestrado para creer que el origen actual es evil.com. Esta mala interpretaci\u00f3n enga\u00f1a a la aplicaci\u00f3n para que trate el dominio del atacante como el origen local. En consecuencia, cualquier petici\u00f3n HttpClient relativa o referencia a PlatformLocation.hostname son redirigidas al servidor controlado por el atacante, exponiendo potencialmente API internas o servicios de metadatos. Este problema ha sido parcheado en las versiones 19.2.21, 20.3.19, 21.2.9 y 22.0.0-next.8."}], "id": "CVE-2026-41423", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-41423", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-08T14:21:41.538064Z", "version": "2.0.3"}}]}, "published": "2026-05-08T14:16:33.260", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/angular/angular/commit/ede7c58a2aa13fdccc8f0b67ce93ba1c11749412"}, {"source": "security-advisories@github.com", "tags": ["Issue Tracking"], "url": "https://github.com/angular/angular/pull/68194"}, {"source": "security-advisories@github.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/angular/angular/security/advisories/GHSA-45q2-gjvg-7973"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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