What is CVE-2026-1634?

CVE-2026-1634 is a medium-severity vulnerability in Alexdtn Subitem Al Slider, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-07.

How severe is CVE-2026-1634?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Alexdtn Subitem Al Slider

CVE-2026-1634

The Subitem AL Slider plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `$_SERVER['PHP_SELF']` parameter in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (18.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Alexdtn Subitem Al Slider — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-1634?: CVE-2026-1634 is a medium-severity vulnerability in Alexdtn Subitem Al Slider, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-07.
How severe is CVE-2026-1634?: Medium severity. CVSS v3 base score is 6.1 out of 10.