CVE-2026-0734CWE-79

WP Allowed Hosts <= 1.0.8 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'allowed-hosts' Parameter

Medium · published January 14, 2026

CVSS v3.1
4.4
EPSS
0%
Percentile
13.3
In the wild
Unconfirmed
What it is

The WP Allowed Hosts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'allowed-hosts' parameter in all versions up to, and including, 1.0.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

The record
Technical detail
CVSS v3.1
4.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00233 · 13.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-01-14T06:40Z
EPSS history
Timeline
  • 14 JAN 06:40Z
    WP Allowed Hosts <= 1.0.8 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'allowed-hosts' Parameter
    cvelistv5