CVE-2026-15731CWE-79cross-site-scripting

CVE-2026-15731

Medium · published September 24, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
15.4
In the wild
Unconfirmed
What it is

The WP Multilang – Translation and Multilingual Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the post content in all versions up to, and including, 2.4.31 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.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00250 · 15.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-24T14:17Z
References (2)
https://plugins.trac.wordpress.org/changeset/3637485/ · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/31c7b12c-eaab-405e-90da-3c5e8ab47245?source=cve · [email protected]
EPSS history
Timeline
  • 25 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 24 SEP 09:27Z
    WP Multilang – Translation and Multilingual Plugin <= 2.4.31 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Content
    cvelistv5