CVE Catalog

CVE-2026-11588

MediumCVSS 6.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.16%

6th percentile - higher than 6% of all known CVEs

Summary

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

Risk Assessment

An attacker can steal administrator sessions, take over the website, or spread malicious content to visitors.

Recommendation

Update the EONSR AEO Agent plugin to a version newer than 3.7.9 if available, or apply other mitigations such as a Web Application Firewall.

Related vulnerabilities

Original NVD description (English source)

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).

Vulnerability data from NVD (NIST) · CISA KEV · EPSS