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THREATINT
PUBLISHED

CVE-2025-4126

EG-Series <= 2.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode



Description

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.

Reserved 2025-04-30 | Published 2025-05-15 | Updated 2025-05-15 | Assigner Wordfence


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

Problem types

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

Product status

Default status
unaffected

*
affected

Timeline

2025-05-14:Disclosed

Credits

muhammad yudha finder

References

www.wordfence.com/...-304d-4b93-b807-65ef3941dd47?source=cve

plugins.trac.wordpress.org/...es/trunk/lib/eg-plugin.inc.php

cve.org (CVE-2025-4126)

nvd.nist.gov (CVE-2025-4126)

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