CVE-2026-16558CWE-79cross-site-scripting

CVE-2026-16558

Medium · published August 8, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
12.6
In the wild
Unconfirmed
What it is

The YMC Filter WordPress plugin before 3.12.8 does not sanitize and escape a layout builder setting before outputting it on a public endpoint, and does not verify object ownership when the setting is saved, allowing users with the Contributor role and above to store JavaScript that executes in the browser of any visitor viewing an affected filter.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00226 · 12.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-08T11:17Z
References (1)
https://wpscan.com/vulnerability/06ba0551-deab-41fb-b501-eef0727b431a/ · [email protected]
EPSS history
Timeline
  • 08 AUG 06:00Z
    YMC Filter < 3.12.8 - Contributor+ Stored XSS via Layout Builder Schema
    cvelistv5