XSS in Live Composer

CVE-2025-15708

The Live Composer WordPress plugin before 2.1.23 does not sanitise and escape some of its custom post type slug settings before using them in front-end links, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/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

  • Live Composer

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-15708?
CVE-2025-15708 is a low-severity vulnerability in Live Composer, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2026-11-07.
How severe is CVE-2025-15708?
Low severity. CVSS v3 base score is 3.5 out of 10.