What is CVE-2025-4126?

CVE-2025-4126 is a medium-severity vulnerability in Emmanuelg Eg-series, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.4/10. Published 2025-05-15.

How severe is CVE-2025-4126?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Is CVE-2025-4126 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Emmanuelg Eg-series

CVE-2025-4126

The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied att…

EPSS: 0.002 (15.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Emmanuelg Eg-series — versions 0

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-4126?: CVE-2025-4126 is a medium-severity vulnerability in Emmanuelg Eg-series, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 6.4/10. Published 2025-05-15.
How severe is CVE-2025-4126?: Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2025-4126 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.