CVE-2025-31020: Webliberty Simple Spoiler

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Webliberty Simple Spoiler simple-spoiler allows Stored XSS.This issue affects Simple Spoiler: from n/a through <= 1.4.

Affected products

• Webliberty Simple Spoiler: up to and including 1.4

Published 2025-04-09. Last modified 2026-06-17.