CVE-2026-11588CWE-79cross-site-scripting

CVE-2026-11588

Medium · published August 6, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
18.9
In the wild
Unconfirmed
What it is

The EONSR AEO Agent WordPress plugin through 3.7.9 does not perform any authorisation check on one of its REST API routes and disables HTML sanitisation before saving the post, allowing unauthenticated attackers to create administrator-attributed published posts containing arbitrary web scripts that execute in the browser of any visitor, including administrators (Stored XSS).

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00275 · 18.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-06T11:16Z
References (1)
https://wpscan.com/vulnerability/31381157-63d6-4c26-bd52-2039a2e1a804/ · [email protected]
EPSS history
Timeline
  • 06 AUG 06:00Z
    EONSR AEO Agent <= 3.7.9 - Unauthenticated Stored XSS via Scheduled Post Creation
    cvelistv5