CVE-2026-11588 json
EONSR AEO Agent <= 3.7.9 - Unauthenticated Stored XSS via Scheduled Post Creation
published 2026-08-06 3 mo ago modified 2026-08-26 2 mo ago also EUVD-2026-53728
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
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).
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/31381157-63d6-4c26-bd52-2039a2e1a804/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Unknown EONSR AEO Agent
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/31381157-63d6-4c26-bd52-2039a2e1a804/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-11588
- NVD CVE-2026-11588
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.