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6.5

ABC Notation can let attackers inject malicious scripts

CVE-2025-31895 · published 1 year ago
Summary

Versions of ABC Notation up to 6.1.3 let a user store web content that includes harmful code. When other users view that content, the malicious code runs in their browsers, potentially stealing data or taking control of their session. Update to a newer version or apply proper input filtering to stop this from happening.

Original advisory text
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in paulrosen ABC Notation abc-notation allows Stored XSS.This issue affects ABC Notation: from n/a...
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in paulrosen ABC Notation abc-notation allows Stored XSS.This issue affects ABC Notation: from n/a through <= 6.1.3.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
6.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published1 Apr 2025
Updated4 Nov 2026
First seen7 Mar 2026
Sources
CVE-2025-31895 · NVD
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