CVE-2026-11588

EONSR AEO Agent <= 3.7.9 - Unauthenticated Stored XSS via Scheduled Post Creation

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).

Affected

EONSR AEO Agent

CVSS v3.1 CNA

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.27% chance of exploitation in the next 30 days, 19th percentile

Published

2026-08-06

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/31381157-63d6-4c26-bd52-2039a2e1a804/

References

• CVE Record
• NVD entry