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TI-2026-39167 Aliases CVE-2026-54267GHSA-rgjc-h3x7-9mwg

Angular Client Hydration DOM Clobbering & Response-Cache Poisoning

Priority LOW 39CWE-471Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.1, 21.2.17, and 20.3.25, to optimize client-side bootstrap in Server-Side Rendered (SSR) environments, Angular supports Hydration via provideClientHydration(). During SSR, Angular serializes the application's runtime state (such as cached HttpClient responses) and outputs it into the HTML stream as a <script> tag with a predictable identifier. During client bootstrap, Angular recovers this state by looking up the element via document.getElementById('ng-state') and parsing its text content. Because the DOM element lookup for the state container is predictable and relies solely on the ID selector (ng-state), it is susceptible to DOM Clobbering. If the application binds untrusted user input or CMS content to element properties such as id (e.g., <div [id]="userInput"> or <a id="ng-state">) before the genuine <script> tag is parsed by the browser, the attacker-controlled element takes precedence in the DOM lookup. During hydration, when Angular calls document.getElementById('ng-state'), the browser returns the attacker's clobbered element. Angular then attempts to parse the text content or attributes of this clobbered element as JSON. This vulnerability is fixed in 22.0.1, 21.2.17, and 20.3.25.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00379 32nd percentileScored 2026-11-07
Fix Fixed @angular/core (npm): 22.0.1, 21.2.17, 20.3.25

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
angularangular>= 22.0.0-next.0 < 22.0.1; >= 21.0.0-next.0 < 21.2.17; >= 20.0.0-next.0 < 20.3.25; up to 19.2.25—No fix listedCNA
—@angular/core (npm)22.0.0-next.0 to before 22.0.122.0.1Patch availableGHSA-rgjc-h3x7-9mwg
—@angular/core (npm)21.0.0-next.0 to before 21.2.1721.2.17Patch availableGHSA-rgjc-h3x7-9mwg
—@angular/core (npm)20.0.0-next.0 to before 20.3.2520.3.25Patch availableGHSA-rgjc-h3x7-9mwg
—@angular/core (npm)up to 19.2.25—No fix listedGHSA-rgjc-h3x7-9mwg
  • angular Vendorangular Affected >= 22.0.0-next.0 < 22.0.1; >= 21.0.0-next.0 < 21.2.17; >= 20.0.0-next.0 < 20.3.25; up to 19.2.25 Fixed in — No fix listed CNA
  • @angular/core (npm) Vendor— Affected 22.0.0-next.0 to before 22.0.1 Fixed in 22.0.1 Patch available GHSA-rgjc-h3x7-9mwg
  • @angular/core (npm) Vendor— Affected 21.0.0-next.0 to before 21.2.17 Fixed in 21.2.17 Patch available GHSA-rgjc-h3x7-9mwg
  • @angular/core (npm) Vendor— Affected 20.0.0-next.0 to before 20.3.25 Fixed in 20.3.25 Patch available GHSA-rgjc-h3x7-9mwg
  • @angular/core (npm) Vendor— Affected up to 19.2.25 Fixed in — No fix listed GHSA-rgjc-h3x7-9mwg

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:*up to 19.2.25; 20.0.0 to before 20.3.25; 21.0.0 to before 21.2.17; 22.0.0 to before 22.0.1Vulnerableangular
  • cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* Versions up to 19.2.25; 20.0.0 to before 20.3.25; 21.0.0 to before 21.2.17; 22.0.0 to before 22.0.1 Vulnerable ·angular

Remediation

  • Fix · GHSA-rgjc-h3x7-9mwg @angular/core (npm) Fixed in 22.0.1 Advisory →
  • Fix · GHSA-rgjc-h3x7-9mwg @angular/core (npm) Fixed in 21.2.17 Advisory →
  • Fix · GHSA-rgjc-h3x7-9mwg @angular/core (npm) Fixed in 20.3.25 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 7 products
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Ceph Storage 4
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Red Hat build of Apicurio Registry 3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54267
  2. 2026-10-03 Alias added: GHSA-rgjc-h3x7-9mwg

References

Patch 2

Advisory 2

Other 1

  • TI-2026-60076 Angular: SSRF and Cross-Origin Credential Disclosure via URL Resolution Discrepancy in SSR CVSS 4.0HIGH 8.6
  • TI-2026-60080 Angular: SSR XSS via Unescaped <template> Content Across DocumentFragment Boundaries in Fallback Raw-Content Elements CVSS 4.0HIGH 8.6
  • TI-2026-60078 Angular: SSR XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Content Elements CVSS 4.0HIGH 8.6
  • TI-2025-37971 A reflected cross-site scripting (XSS) vulnerability in CKeditor v46.1.0 & Angular… CVSS 3.1MEDIUM 5.4
  • TI-2026-36931 Angular: URL Parser Differential in @angular/platform-server leading to SSRF Allowlist Bypass CVSS 4.0HIGH 8.8
  • TI-2026-34131 Angular: SSRF via Hostname Hijacking in @angular/platform-server CVSS 4.0HIGH 8.8
See all 28 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences