CVE-2026-11588 Details
Description
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).
A stored cross-site scripting vulnerability has been identified in the EONSR AEO Agent WordPress plugin, affecting versions through 3.7.9. The issue arises because the plugin's REST API route lacks proper authorization checks and disables HTML sanitization before saving posts. This allows unauthenticated attackers to create published posts attributed to administrators, containing arbitrary web scripts that execute in the browsers of all visitors, including administrators.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 6, 2026CISA-ADP
Assessed Aug 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/31381157-63d6-4c26-bd52-2039a2e1a804/ | [email protected] | AdvisoryExploitPartial ContentRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| EONSR AEO Agent | <= 3.7.9 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 6, 2026 | CVE Modified | CISA-ADP |
| Aug 6, 2026 | New CVE Received | [email protected] |
Volerion