What is CVE-2025-8561?

CVE-2025-8561 is a medium-severity vulnerability in Ovatheme Ova Advent, classified under Improper Neutralization of Alternate XSS Syntax. CVSS score: 6.4/10. Published 2025-10-15.

How severe is CVE-2025-8561?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Ovatheme Ova Advent

CVE-2025-8561

The Ova Advent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in all versions up to, and including, 1.1.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

EPSS: 0.002 (11.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Ovatheme Ova Advent — versions 0

Weakness classification (CWE)

CWE-87 — Improper Neutralization of Alternate XSS Syntax

References

Frequently asked questions

What is CVE-2025-8561?: CVE-2025-8561 is a medium-severity vulnerability in Ovatheme Ova Advent, classified under Improper Neutralization of Alternate XSS Syntax. CVSS score: 6.4/10. Published 2025-10-15.
How severe is CVE-2025-8561?: Medium severity. CVSS v3 base score is 6.4 out of 10.