CVE-2026-111592mediumCWE-79

CVE-2026-111592: medium-severity vulnerability in publishpress Co-Authors, Multiple Authors and…

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

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.4epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products
publishpress · Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors
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CVE-2024-9215HIGHCo-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors <= 4.7.1 - Insecure Direct Object Reference to Authenticated (Author+) Arbitrary User Email Update and Account TakeoverEPSS 0.5%CVE-2026-85657MEDIUMCo-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' ParameterEPSS 0.2%