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Description

The WP Allowed Hosts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'allowed-hosts' parameter in all versions up to, and including, 1.0.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access 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 2026-01-08 | Published 2026-01-14 | Updated 2026-01-14 | 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

* (semver)
affected

Timeline

2026-01-13:Disclosed

Credits

Bhumividh Treloges finder

References

www.wordfence.com/...-a178-4033-8607-652178860211?source=cve

plugins.trac.wordpress.org/...-hosts/trunk/allowed-hosts.php

plugins.trac.wordpress.org/...s/tags/1.0.8/allowed-hosts.php

cve.org (CVE-2026-0734)

nvd.nist.gov (CVE-2026-0734)

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