Cross-Site Scripting Vulnerability in ProseMirrorToHtml by etaminstudio
CVE-2025-64501

7.6HIGH

Key Information:

Vendor

Etaminstudio

Status
Prosemirror To Html
Vendor
CVE Published:
10 November 2025

What is CVE-2025-64501?

The ProsemirrorToHtml JSON converter, used for transforming ProseMirror-compatible JSON into HTML, is vulnerable to Cross-Site Scripting (XSS) attacks in versions 0.2.0 and earlier. This vulnerability arises due to insecure handling of attribute values within HTML output, allowing attackers to inject malicious JavaScript through these values. Although the content within tags is correctly escaped, the lack of escaping in attribute values presents a significant security risk. Affected applications that convert user-generated ProseMirror content to HTML and end users viewing this content may be at risk. The issue has been addressed in version 0.2.1.

Affected Version(s)

prosemirror_to_html < 0.2.1

References

https://github.com/etaminstudio/prosemirror_to_html/secur...
x_refsource_CONFIRM
https://github.com/etaminstudio/prosemirror_to_html/commi...
x_refsource_MISC

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-64501 : Cross-Site Scripting Vulnerability in ProseMirrorToHtml by etaminstudio