Answer in brief
CVE-2026-101895 records a High severity (CVSS 8.7) vulnerability in Angular SSR: Denial of Service (DoS) via Infinite Loop on Malformed DOCTYPE. The current sources do not mark it as known exploited. The current feed maps angular/angular (generic), @angular//platform-server (generic), @angular/platform-server (npm), @angular/platform-server (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps angular/angular (generic), @angular//platform-server (generic), @angular/platform-server (npm), @angular/platform-server (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| angular/angulargeneric | <=19.2.25 || >=20.0.0 <20.3.31 || >=21.0.0 <21.2.23 || >=22.0.0 <22.1.6 | = 19.2.25, 20.3.31, 21.2.23, 22.1.6 |
| @angular//platform-servergeneric | <=19.2.25 || >=20.0.0 <20.3.31 || >=21.0.0 <21.2.23 || >=22.0.0 <22.1.6 | = 19.2.25, 20.3.31, 21.2.23, 22.1.6 |
| @angular/platform-servernpm | >=0 | Not reported |
| @angular/platform-servernpm | >=22.0.0,<22.1.6 | 22.1.6 |
| @angular/platform-servernpm | >=21.0.0,<21.2.23 | 21.2.23 |
| @angular/platform-servernpm | >=20.0.0,<20.3.31 | 20.3.31 |
| @angular/platform-servernpm | <=19.2.25 | Not reported |
| @angular/platform-servernpm | >=22.0.0 <22.1.6 | 22.1.6 |
| @angular/platform-servernpm | >=21.0.0 <21.2.23 | 21.2.23 |
| @angular/platform-servernpm | >=20.0.0 <20.3.31 | 20.3.31 |
Published upstream
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 28, 2026
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.31, 21.2.23, and 22.1.6, the @angular/platform-server DOM emulation parser can enter an infinite synchronous loop when Angular server-side rendering processes attacker-controlled HTML containing an incomplete DOCTYPE that ends with whitespace at end of input. In Domino lib/HTMLParser.js, after_doctype_name_state emits doctype and EOF tokens without advancing nextchar or leaving the fixed-lookahead state, so the scanner repeatedly handles the same EOF marker. A remote unauthenticated attacker can use this condition through server-side HTML parsing paths such as innerHTML binding to consume a Node.js SSR worker at full CPU, starve the event loop, and stop concurrent and subsequent requests. This issue is fixed in versions 20.3.31, 21.2.23, and 22.1.6.
Quoted source text, attributed separately from HOL analysis.