๐Ÿ›ก๏ธ CVE-2025-64501
๐ŸŸ  CVSS 8.0 โ€” High โœ… No Known Exploit CWE-79 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

ProsemirrorToHtml is a JSON converter which takes ProseMirror-compatible JSON and outputs HTML. In versions 0.2.0 and below, the `prosemirror_to_html` gem is vulnerable to Cross-Site Scripting (XSS) attacks through malicious HTML attribute values. While tag content is properly escaped, attribute values are not, allowing attackers to inject arbitrary JavaScript code. Applications that use `prosemirror_to_html` to convert ProseMirror documents to HTML, user-generated ProseMirror content, and end users viewing the rendered HTML output are all at risk of attack. This issue is fixed in version 0.2.1.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
CWE CWE-79
Public Exploit โœ… No
Source NVD
Published 2025-11-06
Updated 2026-06-02
Modified 2026-02-03
Fix URL N/A

Affected Packages

Software From version Fixed in
prosemirror-to-html โ€” 0.2.1
unknown โ€” โ€”

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