CVE-2026-3620CWE-20

Word Replacer <= 0.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Replacement' Parameter

Medium · published June 2, 2026

CVSS v3.1
4.4
EPSS
0%
Percentile
31.5
In the wild
Unconfirmed
What it is

The Word Replacer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'replacement' parameter in all versions up to, and including, 0.4. This is 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.

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
0.00386 · 31.5th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-06-02T07:48Z
EPSS history
Timeline
  • 02 JUN 07:48Z
    Word Replacer <= 0.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Replacement' Parameter
    cvelistv5