XSS in Publishpress Co-Authors, Multiple Authors And Guest In An Author Box With
CVE-2026-85657
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.
Vulnerability class: XSS (Cross-Site Scripting)
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
Affected products
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-85657?
- CVE-2026-85657 is a medium-severity vulnerability in Publishpress Co-Authors, Multiple Authors And Guest In An Author Box With, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-15.
- How severe is CVE-2026-85657?
- Medium severity. CVSS v3 base score is 5.4 out of 10.