{"id":"CVE-2026-88056","state":"PUBLISHED","title":"Angular: SSRF and Cross-Origin Credential Disclosure via URL Resolution Discrepancy in SSR","description":"Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular Server-Side Rendering in @angular/platform-server processes user-controlled resource or request URLs through HttpClient after application code validates them with WHATWG URL parsing. The resolveUrl and parseUrl utilities called String.prototype.trim(), which removed leading Unicode whitespace such as U+00A0 or U+FEFF after the input passed a same-origin check, converting a relative path into a protocol-relative attacker-controlled URL. In affected applications that attach sensitive server-side credentials such as Authorization headers to approved requests, relativeUrlsTransformerInterceptorFn then dispatched the request to the attacker-controlled origin, causing SSRF and credential disclosure. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4.","publishedAt":"2026-09-10T18:42:34.054Z","updatedAt":"2026-09-15T14:56:52.167Z","severity":{"score":8.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["angular angular"],"affected":[{"vendor":"angular","product":"angular","versions":[{"version":"<= 19.2.25","status":"affected"},{"version":">= 20.0.0, < 20.3.30","status":"affected"},{"version":">= 21.0.0, < 21.2.22","status":"affected"},{"version":">= 22.0.0, < 22.1.4","status":"affected"}]}],"references":["https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4","https://github.com/angular/angular/commit/3e924cc8dbbb57f23b262cb8f0d7e2bd0673034c","https://github.com/angular/angular/commit/5aa6d97deb9ef1de14e23748b7fa74f97d183132","https://github.com/angular/angular/commit/71e52d1396b9cef98652929b73e08c4cde645970","https://github.com/angular/angular/releases/tag/v20.3.30","https://github.com/angular/angular/releases/tag/v21.2.22","https://github.com/angular/angular/releases/tag/v22.1.4"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/88xxx/CVE-2026-88056.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-88056","state":"PUBLISHED","datePublished":"2026-09-10T18:42:34.054Z","dateUpdated":"2026-09-15T14:56:52.167Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-09T21:22:45.434Z"},"containers":{"cna":{"title":"Angular: SSRF and Cross-Origin Credential Disclosure via URL Resolution Discrepancy in SSR","descriptions":[{"lang":"en","value":"Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.30, 21.2.22, and 22.1.4, Angular Server-Side Rendering in @angular/platform-server processes user-controlled resource or request URLs through HttpClient after application code validates them with WHATWG URL parsing. The resolveUrl and parseUrl utilities called String.prototype.trim(), which removed leading Unicode whitespace such as U+00A0 or U+FEFF after the input passed a same-origin check, converting a relative path into a protocol-relative attacker-controlled URL. In affected applications that attach sensitive server-side credentials such as Authorization headers to approved requests, relativeUrlsTransformerInterceptorFn then dispatched the request to the attacker-controlled origin, causing SSRF and credential disclosure. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4."}],"affected":[{"vendor":"angular","product":"angular","versions":[{"version":"<= 19.2.25","status":"affected"},{"version":">= 20.0.0, < 20.3.30","status":"affected"},{"version":">= 21.0.0, < 21.2.22","status":"affected"},{"version":">= 22.0.0, < 22.1.4","status":"affected"}]}],"references":[{"url":"https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4","name":"https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/angular/angular/commit/3e924cc8dbbb57f23b262cb8f0d7e2bd0673034c","name":"https://github.com/angular/angular/commit/3e924cc8dbbb57f23b262cb8f0d7e2bd0673034c","tags":["x_refsource_MISC"]},{"url":"https://github.com/angular/angular/commit/5aa6d97deb9ef1de14e23748b7fa74f97d183132","name":"https://github.com/angular/angular/commit/5aa6d97deb9ef1de14e23748b7fa74f97d183132","tags":["x_refsource_MISC"]},{"url":"https://github.com/angular/angular/commit/71e52d1396b9cef98652929b73e08c4cde645970","name":"https://github.com/angular/angular/commit/71e52d1396b9cef98652929b73e08c4cde645970","tags":["x_refsource_MISC"]},{"url":"https://github.com/angular/angular/releases/tag/v20.3.30","name":"https://github.com/angular/angular/releases/tag/v20.3.30","tags":["x_refsource_MISC"]},{"url":"https://github.com/angular/angular/releases/tag/v21.2.22","name":"https://github.com/angular/angular/releases/tag/v21.2.22","tags":["x_refsource_MISC"]},{"url":"https://github.com/angular/angular/releases/tag/v22.1.4","name":"https://github.com/angular/angular/releases/tag/v22.1.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-10T18:42:34.054Z"},"source":{"advisory":"GHSA-f6mr-pjwc-34m4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-15T14:56:19.499267Z","id":"CVE-2026-88056","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-15T14:56:52.167Z"}}]}}}