Vulnerability · Published Sep 15, 2026 · Assigned by Wordfence
CVE-2026-85657Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors <= 4.15.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'profile_fields_user_email_value_prefix' Parameter
Medium 5.4
In plain English
A medium-severity cross-site scripting in Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors from publishpress. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Official description
The Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘profile_fields_user_email_value_prefix’ parameter in all versions up to, and including, 4.15.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user clicks on a link.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| publishpress | Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors | 0 – through 4.15.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N