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Description

The Related Posts Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

PUBLISHED Reserved 2025-10-17 | Published 2025-10-18 | Updated 2025-10-18 | Assigner Wordfence




MEDIUM: 4.4CVSS:3.1/AV:N/AC:H/PR:H/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

2025-10-17:Vendor Notified
2025-10-17:Disclosed

Credits

Prabhat Verma finder

References

www.wordfence.com/...-33b2-43d8-a6a9-64a3c37c4b52?source=cve

plugins.trac.wordpress.org/.../related-posts-lite/tags/1.12/

wordpress.org/.../related-posts-lite/?utm_source=chatgpt.com

github.com/...sts-Lite-plugin-XSS-PoC?utm_source=chatgpt.com

cve.org (CVE-2025-11926)

nvd.nist.gov (CVE-2025-11926)

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