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CVE-2026-124412

WordPress Slim SEO plugin <= 4.11.5 - Content Injection vulnerability

4.3 Medium

CVE-2026-124412 is a medium vulnerability (CVSS 4.3) in Anh Tran Slim Seo, published November 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. No source names a fixed version.

What does this mean?
Severity
4.3 MediumCVSS 3.1, CVE List
Exploit chance
0.27%EPSS, 19th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
None

Exploit likelihood

0.27%Scored on 2026-11-14. The trend appears after a second daily score.

Affected products

What each source reports

CVE List Score used4.3

WordPress Slim SEO plugin <= 4.11.5 - Content Injection vulnerability

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.

Record
CVE-2026-124412
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-80
Updated
2026-11-13
EUVDEUVD-2026-1253644.3

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.

Record
EUVD-2026-125364
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Updated
2026-11-13
GitHub AdvisoriesGHSA-wh3w-9rmg-hq644.3

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in...

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.

Record
GHSA-wh3w-9rmg-hq64
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-80
Updated
2026-11-13
NVD4.3

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.

Record
CVE-2026-124412
CVSS 3.1
4.3 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness
CWE-80
Updated
2026-11-13

History

History
RecordedChangedSources
publishedEUVD, NVD
publishedEUVD
aliases, referencesGitHub Advisories
aliases, products, publishedEUVD
first indexedCVE List

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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