What is CVE-2026-14876?

CVE-2026-14876 is a medium-severity vulnerability in Nextendweb Smart Slider 3, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-09-30.

How severe is CVE-2026-14876?

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

XSS in Nextendweb Smart Slider 3

CVE-2026-14876

The Smart Slider 3 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'data-href' parameter in all versions up to, and including, 3.5.1.38 due to insufficient input sanitization and output escaping. 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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-09-30.

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.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Nextendweb Smart Slider 3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-14876?: CVE-2026-14876 is a medium-severity vulnerability in Nextendweb Smart Slider 3, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-09-30.
How severe is CVE-2026-14876?: Medium severity. CVSS v3 base score is 6.4 out of 10.