XSS in Nested Pages
CVE-2026-15233
The Nested Pages WordPress plugin before 3.2.15 does not properly escape post titles before outputting them into HTML attributes on an administrative listing screen, allowing users with the Editor role (or Contributor/Author when the Nested Pages WordPress plugin before 3.2.15 is enabled for the post type) to inject arbitrary JavaScript that executes in the session of any higher-privileged user who views that screen.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.001 (3.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Unknown Nested Pages — versions 0
Weakness classification (CWE)
References
- contact@wpscan.com (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-15233?
- CVE-2026-15233 is a medium-severity vulnerability in Nested Pages, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-08-04.
- How severe is CVE-2026-15233?
- Medium severity. CVSS v3 base score is 4.8 out of 10.