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 'name (maps to display_name)' parameter in all versions up to, and including, 4.17.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the attacker's user account to have a mapped author term, which occurs when an administrator has assigned them as a co-author on content or has enabled automatic author term creation for their role — this mapping is not present by default for new users on a stock install.

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Fixes

Solution

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Workaround

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History

Sat, 31 Oct 2026 08:00:00 +0000

Type Values Removed Values Added
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 'name (maps to display_name)' parameter in all versions up to, and including, 4.17.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the attacker's user account to have a mapped author term, which occurs when an administrator has assigned them as a co-author on content or has enabled automatic author term creation for their role — this mapping is not present by default for new users on a stock install.
Title Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors <= 4.17.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via display_name profile-sync into author term name
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-10-31T07:46:48.065Z

Reserved: 2026-10-16T13:27:30.483Z

Link: CVE-2026-111592

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-31T08:16:48.463

Modified: 2026-10-31T08:16:48.463

Link: CVE-2026-111592

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-31T09:30:14Z

Weaknesses