High 8.6Published Sep 10, 2026

CVE-2026-88058Angular: SSR XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Content Elements

Updated under an hour ago (2026-10-19 06:30 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for angular

Exploited in the last 30 days

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 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.

CVSS: 8.6 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-79, CWE-116
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Sep 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

angular angular angular:angular (from the name)	through 19.2.25; from 20.0.0, < 20.3.30; from 21.0.0, < 21.2.22; from 22.0.0, < 22.1.4	CNA record
angular angular angular:angular	from 19.0.0 through 19.2.25; from 20.0.0 before 20.3.30; from 21.0.0 before 21.2.22; from 22.0.0 before 22.1.4	NVD

References

https://github.com/angular/angular/security/advisories/GHSA-j3r3-mxqp-r2p4x-refsource-confirm, exploit, third-party-advisory
https://github.com/angular/angular/issues/70146x-refsource-misc, issue-tracking, patch
https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915x-refsource-misc, patch
https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fefx-refsource-misc, patch
https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8x-refsource-misc, patch
https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528fx-refsource-misc, patch
https://github.com/angular/angular/releases/tag/v20.3.30x-refsource-misc, release-notes
https://github.com/angular/angular/releases/tag/v21.2.22x-refsource-misc, release-notes
https://github.com/angular/angular/releases/tag/v22.1.4x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.