CVE-2026-124412

MEDIUM 4.3

WordPress Slim SEO plugin <= 4.11.5 - Content Injection vulnerability

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in eLightUp Slim SEO slim-seo allows Code Injection.This issue affects Slim SEO: from n/a through 4.11.5.

CWE	CWE-80
Vendor	elightup
Product	slim seo
Published	Nov 13, 2026
Last Updated	Nov 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

eLightUp / Slim SEO

0 ≤ 4.11.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/wordpress/plugin/slim-seo/vulnerability/wordpress-slim-seo-plugin-4-11-5-content-injection-vulnerability?_s_id=cve

Credits

neurotx | Patchstack Bug Bounty Program