What is CVE-2025-31020?

CVE-2025-31020 is a medium-severity vulnerability in Webliberty Simple Spoiler, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2025-04-09.

How severe is CVE-2025-31020?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XSS in Webliberty Simple Spoiler

CVE-2025-31020

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (26.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L.

Affected products

Webliberty Simple Spoiler — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2025-31020?: CVE-2025-31020 is a medium-severity vulnerability in Webliberty Simple Spoiler, classified under Cross-site Scripting. CVSS score: 6.5/10. Published 2025-04-09.
How severe is CVE-2025-31020?: Medium severity. CVSS v3 base score is 6.5 out of 10.