CVE-2021-3990: Showdoc

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

showdoc is vulnerable to Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Affected products

• Showdoc Showdoc: before 2.9.13 (fixed in 2.9.13)

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