CVE-2026-124412: WordPress Slim SEO plugin <= 4.11.5 - Content Injection vulnerability

Published Nov 13, 2026
·
Updated

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.

Affected Software

1 affected component
eLightUp Slim SEO<=4.11.5

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade wordpress/slim-seo to a version that resolves this vulnerability.

    Fixed in 4.11.6

Event History

Nov 13, 2026
CVE Published
via MITRE·02:40 PM
Data Sourced
via MITRE·02:40 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·03:17 PM
DescriptionSeverityWeakness

Frequently Asked Questions

1

What level of access does an attacker need to exploit this issue?

The vulnerability requires low-privileged access to the affected WordPress site. It does not require user interaction, and it can be exploited over the network.

2

What versions are affected?

Slim SEO versions through 4.11.5 are affected. The available information does not identify a fixed version.

3

What is the potential impact?

Successful exploitation can allow content injection through basic cross-site scripting. The reported impact is limited to confidentiality, with no integrity or availability impact indicated.

Contact

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