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 attributes in the shortcode_title function. This makes it possible for authenticated attackers - with contributor-level access and above, on sites with the Classic Editor plugin activated - to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.

CVSS v3.1

6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

EPSS

0.27% chance of exploitation in the next 30 days, 20th percentile

Published

2025-05-15

Updated

2026-04-08

Proof-of-concept exploits (1)

• Slow-Mist/CVE-2025-41260★ · 2025-08-07

References

• CVE Record
• NVD entry

Related

• CVE-2025-41244
• CVE-2025-4133
• CVE-2025-41243
• CVE-2025-4136
• CVE-2025-41242
• CVE-2025-41373