Crayon Syntax Highlighter

Crayon Syntax Highlighter has 6 disclosed vulnerabilities in the WordSec catalog, reported between 2012 and 2023; 4 are fixed and 2 remain unpatched as of September 2026. Their average CVSS score is 7.2, and the most serious one scores 9.8 out of 10. Severity breakdown: 1 critical and 1 high. 2023 was the busiest year with 2 disclosures.

The most common weakness is Cross-Site Request Forgery (CSRF), behind 1 of the records (17%). Other recurring categories include Cross-Site Scripting, Missing Authorization.

4 of the records (67%) have a vendor fix, while 2 remain unpatched. The oldest unresolved one dates back to 2023.

4 independent researchers contributed these findings, most of them (2) reported by István Márton.