CVE-2026-5934CWE-79cross-site-scripting

CVE-2026-5934

High · published August 28, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
26.5
In the wild
Unconfirmed
What it is

The WP Rocket plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.21.0.1. This is due to insufficient input sanitization and output escaping of user-supplied data via the rocket_beacon AJAX endpoint. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00342 · 26.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-28T20:18Z
References (2)
https://github.com/wp-media/wp-rocket/releases/tag/v3.21.1 · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/3560bf50-2190-4469-9d92-b6b59f118324?source=cve · [email protected]
EPSS history
Timeline
  • 30 AUG 16:18Z
    EPSS moved — → 0%
    epss
  • 28 AUG 11:29Z
    WP Rocket <= 3.21.0.1 - Unauthenticated Stored Cross-Site Scripting via Picture Source Attributes in rocket_beacon Endpoint
    cvelistv5