CVE-2021-3989: Showdoc

Medium severity, CVSS 6.1. EPSS: 0.8% chance of exploitation in the next 30 days.

showdoc is vulnerable to URL Redirection to Untrusted Site

Affected products

• Showdoc Showdoc: before 2.9.13 (fixed in 2.9.13)

Published 2021-12-01. Last modified 2026-06-17.