XSS in Post Grid, Slider & Carousel Ultimate

CVE-2026-16260

The Post Grid, Slider & Carousel Ultimate WordPress plugin before 1.8.1 does not sanitise and escape one of its custom post type settings before outputting it in an HTML attribute on the admin edit screen, allowing users with the Contributor role and above to inject JavaScript that executes in the session of any administrator who opens the affected item.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-16260: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

  • Post Grid, Slider & Carousel Ultimate

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16260?
CVE-2026-16260 is a medium-severity vulnerability in Post Grid, Slider & Carousel Ultimate, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-08-22.
How severe is CVE-2026-16260?
Medium severity. CVSS v3 base score is 6.8 out of 10.