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VulnerabilityPublished

CVE-2026-11588: EONSR AEO Agent (WordPress plugin) · Cross-Site Scripting (XSS)

Affects EONSR AEO Agent (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 6.1 Medium.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
EONSR AEO AgentAffected
  • <=3.7.9
Fixed in–

AI-suggested

Until a fix is available, restrict access to the REST API routes if possible and monitor for suspicious post creation activity. Avoid visiting or sharing posts from untrusted sources. Follow vendor updates closely for an official fix or temporary mitigation.

Description

CVE-2026-11588 is a stored cross-site scripting (XSS) vulnerability in the EONSR AEO Agent WordPress plugin through version 3.7.9. The plugin fails to perform authorization checks on a REST API route and disables HTML sanitization before saving posts. This allows unauthenticated attackers to create published posts attributed to administrators containing arbitrary scripts that execute in visitors' browsers, including administrators. The vulnerability has a medium severity with a CVSS score of 6.1.

References

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