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VulnerabilityPublished

CVE-2026-124412: Slim SEO (WordPress plugin) · Basic XSS

Affects Slim SEO (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium : upgrade to 4.11.6 when convenient.

Data as of 13 Nov 2026, 15:06 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Patchstack)CVSS 3.14.3
Patch
Available – fixed in 4.11.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 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 13 Nov 2026.

What to do

Upgrade Slim SEO (WordPress plugin) to 4.11.6.

Affected software

ProductAffectedFixed in
Slim SEOslim-seoAffected
  • <4.11.6
Fixed in
  • 4.11.6

AI-suggested

Upgrade the Slim SEO plugin to version 4.11.6 or later, where this vulnerability has been fixed. No other mitigation actions are specifically required as the issue is resolved in the official update.

Description

CVE-2026-124412 is a cross-site scripting (XSS) vulnerability in the eLightUp Slim SEO plugin. It involves improper neutralization of script-related HTML tags, allowing code injection. This affects Slim SEO versions from initial releases up to 4.11.5. The issue is fixed in version 4.11.6.

References

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