CVE-2026-88060

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    CVE-2026-88060

    Published: 10 Sept 2026Last Modified: 11 Sept 2026

    Summary: Angular: SSR XSS via Unescaped <template> Content Across DocumentFragment Boundaries in Fallback Raw-Content Elements

    Details: 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.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88060.json, https://github.com/angular/angular/commit/73d8bbd27cb46495426d4132975a1355b47ad915, https://github.com/angular/angular/commit/89b20568dfaee1ec8e0b3bcf1872acdddd2f4fef, https://github.com/angular/angular/commit/ba3bc47b20b3d12f5eb141ec9c651373ae4d15e8, https://github.com/angular/angular/releases/tag/v20.3.30, https://github.com/angular/angular/releases/tag/v21.2.22, https://github.com/angular/angular/releases/tag/v22.1.4, https://github.com/angular/angular/security/advisories/GHSA-v3p8-whq6-r5jg, https://github.com/angular/domino/commit/04f987dc08ff3736b427f50941adf1722458528f, https://nvd.nist.gov/vuln/detail/CVE-2026-88060

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    v20.3.29
    v20.3.28
    v20.3.27
    v20.3.26
    v20.3.25
    v20.3.24
    v20.3.23
    v20.3.22
    v20.3.21
    v20.3.20
    v20.3.19
    v20.3.18
    v20.3.17
    v20.3.16

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-88060 | CVE-DB