CVE-2025-64501 (GCVE-0-2025-64501)
Vulnerability from cvelistv5 – Published: 2025-11-10 21:37 – Updated: 2025-11-12 20:14
VLAI
EPSS
VEX
Title
ProsemirrorToHtml: Cross-Site Scripting vulnerability through unescaped HTML attribute values
Summary
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.
Severity
7.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 17:36 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/etaminstudio/prosemirror_to_ht… | x_refsource_CONFIRM |
| https://github.com/etaminstudio/prosemirror_to_ht… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| etaminstudio | prosemirror_to_html |
Affected:
< 0.2.1
|
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