Answer in brief
CVE-2026-73427 records a Low severity (CVSS 2.1) vulnerability in Trix: XSS via JSON deserialization bypass in drag-and-drop (Level0InputController). The current sources do not mark it as known exploited. The current feed maps basecamp/trix (generic), trix (npm), trix (npm), action_text-trix (rubygems) 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 2.1. 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 basecamp/trix (generic), trix (npm), trix (npm), action_text-trix (rubygems) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| basecamp/trixgeneric | < 2.1.18 | Not reported |
| trixnpm | >=0 <2.1.18 | 2.1.18 |
| trixnpm | <2.1.18 | 2.1.18 |
| action_text-trixrubygems | >=0 <2.1.18 | 2.1.18 |
| action_text-trixrubygems | <2.1.18 | 2.1.18 |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Prior to 2.1.18, Trix is vulnerable to cross-site scripting when a crafted application/x-trix-document JSON payload is dropped into an editor using the fallback Level0InputController, such as an embedded WebView without Input Events Level 2 support. The StringPiece.fromJSON method trusts href attributes from the JSON payload without sanitization, allowing a draggable element containing a javascript: URI to bypass DOMPurify sanitization and inject executable JavaScript into the DOM. Exploitation requires the victim to drag and drop attacker-controlled content, and server-side HTML sanitization can neutralize the payload on save. This issue is fixed in version 2.1.18.
Quoted source text, attributed separately from HOL analysis.