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CVE-2026-69149— Angular SSR: Missing Fallback Raw-Content Serialization Escaping leads to Cross-Site Scripting (XSS)

Quick assessment

Affected
angular angular
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Angular是Angular组织开源的一个开发平台。用于使用 Typescript / JavaScript 和其他语言构建移动和桌面 Web 应用程序。 Angular 20.3.27之前版本、21.2.19之前版本和22.0.7之前版本存在跨站脚本漏洞，该漏洞源于@angular/platform-server的DOM模拟依赖（domino）在序列化fallback raw-content元素（<iframe>、<noembed>、<noframes>和<noscript>）内容时存在跨站脚本漏洞，

CVSS 8.6 · High EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 6

VendorProduct Version RangeStatus
@angular platform-server < 20.3.27 affected
>= 21.0.0-next.0, < 21.2.19 affected
>= 22.0.0-next.0, < 22.0.7 affected
angular angular < 20.3.27 affected
>= 21.0.0-next.0, < 21.2.19 affected
>= 22.0.0-next.0, < 22.0.7 affected
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I. Basic Information for CVE-2026-69149

Vulnerability Information
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Vulnerability Title
Angular SSR: Missing Fallback Raw-Content Serialization Escaping leads to Cross-Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
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 (<iframe>, <noembed>, <noframes>, and <noscript>). This issue is fixed in versions 20.3.27, 21.2.19, and 22.0.7.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Angular 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Angular是Angular组织开源的一个开发平台。用于使用 Typescript / JavaScript 和其他语言构建移动和桌面 Web 应用程序。 Angular 20.3.27之前版本、21.2.19之前版本和22.0.7之前版本存在跨站脚本漏洞，该漏洞源于@angular/platform-server的DOM模拟依赖（domino）在序列化fallback raw-content元素（<iframe>、<noembed>、<noframes>和<noscript>）内容时存在跨站脚本漏洞，
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
angular angular < 20.3.27 -
@angular platform-server < 20.3.27 -

II. Public POCs for CVE-2026-69149

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: comment-node in <noscript> serialized unescaped; re-parse creates live <script> element containing PROOF token PROOF_c84d2ade57dab39d — XSS confirmed
Reproduction recording is a Pro+ exclusive
Watch the full sandbox build + live exploit recording for this CVE. Limited-time ¥499/mo.
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claude_code · 12842 chars
GitHub 复现环境（可 clone 直接跑）
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III. Intelligence Information for CVE-2026-69149

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Patches & Fixes for CVE-2026-69149 (6)

Vendor Advisories for CVE-2026-69149 (1)

Same Patch Batch · angular · 2026-08-03 · 3 CVEs total

CVE-2026-68945 8.8 HIGH Angular: Cache-Key Ambiguity in HttpTransferCache Leading to Cross-Request Response Reuse
CVE-2026-69151 7.6 HIGH Angular i18n: Cross-Site Scripting (XSS) via event-handler attributes

IV. Related Vulnerabilities

Same product: angular
Same vendor: angular
Same weakness: CWE-79

V. Comments for CVE-2026-69149

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