CVE-2025-10165: AP Background <= 3.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting

Severity: medium (CVSS 6.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-03 · updated 2026-10-12
Weakness: CWE-79

Description

The AP Background plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'adv_parallax_back' shortcode in all versions up to, and including, 3.8.2 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.

Affected products

hovanesvn AP Background: through 3.8.2

References

https://plugins.trac.wordpress.org/browser/ap-background/trunk/includes/shortCodeClass.php#L44
https://wordpress.org/plugins/ap-background
https://www.wordfence.com/threat-intel/vulnerabilities/id/f98b848c-9f97-4d00-97de-7651b9035731?source=cve

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