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THREATINT
PUBLISHED

CVE-2025-4611

Slim SEO <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via slim_seo_breadcrumbs Shortcode



Description

The Slim SEO – Fast & Automated WordPress SEO Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's slim_seo_breadcrumbs shortcode in all versions up to, and including, 4.5.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Reserved 2025-05-12 | Published 2025-05-21 | Updated 2025-05-21 | 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-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

*
affected

Timeline

2025-05-20:Disclosed

Credits

muhammad yudha finder

References

www.wordfence.com/...-716f-450c-a1c2-497de8095daa?source=cve

wordpress.org/plugins/slim-seo/

plugins.trac.wordpress.org/...tags/4.5.3/src/Breadcrumbs.php

plugins.trac.wordpress.org/...tags/4.5.3/src/Breadcrumbs.php

plugins.trac.wordpress.org/...tags/4.5.3/src/Breadcrumbs.php

github.com/...ommit/b475dceff3a6bd94335d5a79eb12cdd92e2c8350

plugins.trac.wordpress.org/changeset/3296099/

cve.org (CVE-2025-4611)

nvd.nist.gov (CVE-2025-4611)

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