{"id":"CVE-2026-88056","sourceIdentifier":"security-advisories@github.com","published":"2026-09-10T19:17:41.477","lastModified":"2026-09-29T19:02:56.377","vulnStatus":"Analyzed","cveTags":[],"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":[{"source":"security-advisories@github.com","affectedData":[{"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"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","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/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","baseScore":8.6,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-15T14:56:19.499267Z","id":"CVE-2026-88056","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-918"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*","versionStartIncluding":"19.0.0","versionEndIncluding":"19.2.25","matchCriteriaId":"E33A4BDD-13F2-4937-9328-488EB06169A7"},{"vulnerable":true,"criteria":"cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*","versionStartIncluding":"20.0.0","versionEndExcluding":"20.3.30","matchCriteriaId":"8AB46288-7919-451D-AE5F-97A7371F130A"},{"vulnerable":true,"criteria":"cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*","versionStartIncluding":"21.0.0","versionEndExcluding":"21.2.22","matchCriteriaId":"2EC4EC89-DAE6-4B7A-B27B-ED329454145F"},{"vulnerable":true,"criteria":"cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*","versionStartIncluding":"22.0.0","versionEndExcluding":"22.1.4","matchCriteriaId":"7A3D8CF6-1272-4004-8C88-373910CDEE48"}]}]}],"references":[{"url":"https://github.com/angular/angular/commit/3e924cc8dbbb57f23b262cb8f0d7e2bd0673034c","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/angular/angular/commit/5aa6d97deb9ef1de14e23748b7fa74f97d183132","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/angular/angular/commit/71e52d1396b9cef98652929b73e08c4cde645970","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/angular/angular/releases/tag/v20.3.30","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/angular/angular/releases/tag/v21.2.22","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/angular/angular/releases/tag/v22.1.4","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]},{"url":"https://github.com/angular/angular/security/advisories/GHSA-f6mr-pjwc-34m4","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Mitigation","Vendor Advisory"]}]}