Cross-Site Scripting (XSS) in @angular/platform-server (CVE-2026-69149)
Summary
Cross-site scripting in @angular/platform-server (CVE-2026-69149). Risk of unauthorized operations or information disclosure. Exploitable via domino.
Original description
The description as published by the source.
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.27, 21.2.19, and 22.0.7, a Cross-Site Scripting (XSS) vulnerability exists in @angular/platform-server's DOM emulation dependency (domino) when serializing the content of fallback raw-content elements (, , , and ). This issue is fixed in versions 20.3.27, 21.2.19, and 22.0.7.
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-69149 has been found in @angular/platform-server.
Attackers can target a specific entry point like domino over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "@angular/platform-server CVE-2026-69149" on the vendor's site.
CVE-2026-69149 (@angular/platform-server) — CWE-79 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: domino / inlineCritical / false / CommonEngine
Workaround: set inlineCriticalCss: false
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in @angular/platform-server. Attackers reach the vulnerable code path via domino without authentication.
Check the vendor advisory for the affected versions of @angular/platform-server. Attack surface: domino / inlineCritical / false / CommonEngine.
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Workaround: set inlineCriticalCss: false
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r '@angular/platform-server' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r '@angular/platform-server' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
@angular/platform-serverを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply temporary workaround mitigate
set inlineCriticalCss: falseパッチが適用されるまでの応急処置として、set inlineCriticalCss: false を実施。回避策の副作用 (機能低下) を確認した上で。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-69149 angular.js
- Ubuntu UBUNTU-CVE-2026-69149 angular.js
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- patch github.com
- patch github.com
- patch github.com
- patch github.com
- patch github.com
- patch github.com
- web github.com