{"id":"CVE-2026-88058","title":"Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages","summary":"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 (SSR) in @angular/platform-server se…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79","CWE-116"],"vendor":"angular","product":"angular","affected":["angular >= 19.0.0, <= 19.2.25","angular >= 20.0.0, < 20.3.30","angular >= 21.0.0, < 21.2.22","angular >= 22.0.0, < 22.1.4"],"patched":["angular 22.1.4"],"published":"2026-09-10","updated":"2026-09-29","sourceUpdated":"2026-09-29T19:01:24.747","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88058","references":[{"url":"https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/issues/70146","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/releases/tag/v20.3.30","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/releases/tag/v21.2.22","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/releases/tag/v22.1.4","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4","label":"security-advisories@github.com"},{"url":"https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f","label":"security-advisories@github.com"},{"url":"https://github.com/angular/angular/issues/70146","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88058"},{"url":"https://github.com/advisories/GHSA-j3r3-mxqp-r2p4"}],"tags":["nvd","cve.org","exploit-available","ghsa","npm","score-dispute"],"epss":0.00281,"epssPercentile":0.20487,"aliases":["GHSA-j3r3-mxqp-r2p4"],"ecosystem":"npm","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-11T15:14:28.505071Z"},"scores":{"nvd":6.1,"cna":8.6},"ingestedAt":"2026-09-12T20:04:42.956Z","slug":"CVE-2026-88058","body":"## Overview\n\nAngular 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 (SSR) in @angular/platform-server serializes ProcessingInstruction DOM nodes inside fallback raw-content elements without escaping matching ancestor closing tags. ProcessingInstruction data escaped greater-than characters but left less-than characters untouched and did not inspect fallback ancestors, so data such as a matching closing tag prematurely terminates noscript, iframe, noembed, or noframes containers. The vulnerable nodes cannot be authored through standard Angular templates; reachability requires application or library code using inject(DOCUMENT).createProcessingInstruction with attacker-controlled data or Renderer2 DOM insertion inside a fallback container. In HTML5 RAWTEXT parsing, the premature close causes subsequent sibling elements to be interpreted as live HTML and enables arbitrary JavaScript execution in a victim's browser. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4.\n\n## Affected\n\n- `angular >= 19.0.0, <= 19.2.25`\n- `angular >= 20.0.0, < 20.3.30`\n- `angular >= 21.0.0, < 21.2.22`\n- `angular >= 22.0.0, < 22.1.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `angular 22.1.4`\n\n## Package advisory (CVE-2026-88058)\n\nAffected packages:\n\n- `@angular/platform-server >= 22.0.0, < 22.1.4`\n- `@angular/platform-server >= 21.0.0, < 21.2.22`\n- `@angular/platform-server >= 20.0.0, < 20.3.30`\n- `@angular/platform-server <= 19.2.25`\n\nPatched in:\n\n- `@angular/platform-server 22.1.4`\n- `@angular/platform-server 21.2.22`\n- `@angular/platform-server 20.3.30`\n\nSource: https://github.com/advisories/GHSA-j3r3-mxqp-r2p4","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":33.6,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":212990,"id":"CVE-2026-88058","ts":1790711105455,"field":"cvss","old":"8.6","new":"6.1"},{"seq":212989,"id":"CVE-2026-88058","ts":1790711105455,"field":"severity","old":"high","new":"medium"}]}