CVE-2021-23158: Htmldoc Project Htmldoc

Critical severity, CVSS 9.8. EPSS: 2.4% chance of exploitation in the next 30 days.

A flaw was found in htmldoc in v1.9.12. Double-free in function pspdf_export(),in ps-pdf.cxx may result in a write-what-where condition, allowing an attacker to execute arbitrary code and denial of service.

Affected products

• Htmldoc Project Htmldoc: version 1.9.12 only

Published 2022-03-16. Last modified 2026-06-17.