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CVE-2026-88060— Angular: SSR XSS via Unescaped <template> Content Across DocumentFragment Boundaries in Fallback Raw-Content Elements

Quick assessment

Affected
angular angular
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Angular 是一个用于使用 TypeScript/JavaScript 及其他语言构建移动和桌面 Web 应用的开发平台。在 20.3.30、21.2.22 和 22.1.4 版本之前，Angular 的服务端渲染（SSR，由 提供）会在像 、 、 和 这样的“回退型原始内容元素”（fallback raw-content elements）嵌套的模板内容中，序列化不可信输入。 问题根源在于：Domino 序列化器在遍历 时，会停止在由 使用的 处，导致 、 、 、HTML 注释或文本节点中的相应闭合标签未被转

CVSS 8.6 · High

Possible ATT&CK Techniques 2 AI

T1145 T1189 · Drive-by Compromise

Affected Version Matrix 4

VendorProduct Version RangeStatus
angular angular <= 19.2.25 affected
>= 20.0.0, < 20.3.30 affected
>= 21.0.0, < 21.2.22 affected
>= 22.0.0, < 22.1.4 affected
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I. Basic Information for CVE-2026-88060

Vulnerability Information
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Vulnerability Title
Angular: SSR XSS via Unescaped <template> Content Across DocumentFragment Boundaries in Fallback Raw-Content Elements
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 20.3.30, 21.2.22, and 22.1.4, Angular server-side rendering (SSR) in @angular/platform-server serializes untrusted input inside template content nested in fallback raw-content elements such as noscript, iframe, noembed, and noframes. The Domino serializer's fallbackRawContentTags traversal stopped at the DocumentFragment used by template.content, so matching closing tags in xmp, style, script, comments, or text nodes were not escaped. Standard interpolation with comments or text nodes is reachable without relaxed schemas; literal xmp or style requires CUSTOM_ELEMENTS_SCHEMA or NO_ERRORS_SCHEMA, while Renderer2 imperative DOM construction is unconditionally affected. When HTML5 RAWTEXT browser parsing encounters the unescaped closing tag, it exits the fallback container and interprets trailing markup as active DOM elements, enabling arbitrary JavaScript execution. This issue is fixed in versions 20.3.30, 21.2.22, and 22.1.4.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
angular angular <= 19.2.25 -

II. Public POCs for CVE-2026-88060

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III. Intelligence Information for CVE-2026-88060

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Patches & Fixes for CVE-2026-88060 (4)

Vendor Pages for CVE-2026-88060 (3)

Other References for CVE-2026-88060 (1)

Same Patch Batch · angular · 2026-09-10 · 5 CVEs total

CVE-2026-88058 8.6 HIGH Angular: SSR XSS via Unescaped Processing Instruction (<?...?>) Nodes in Fallback Raw-Cont
CVE-2026-88056 8.6 HIGH Angular: SSRF and Cross-Origin Credential Disclosure via URL Resolution Discrepancy in SSR
CVE-2026-88057 5.3 MEDIUM Angular: Sanitization bypass via directive host bindings on concrete host elements in @ang
CVE-2026-88059 4.0 MEDIUM Angular: Information Leak via `HttpTransferCache` Bypass When Using `withRequestsMadeViaPa

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-88060

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