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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-111592
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-31 08:16:48 UTC
Updated2026-10-31 08:16:48 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 6.4 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Publishpress Co-Authors Multiple Authors And Guest Authors In An Author Box With PublishPress Authors affected 4.17.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/publishpress-authors/tags/4.17.0/src/core/Classes/Aut... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/publishpress-authors/tags/4.17.0/src/modules/multiple... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/329226bc-7d0e-45e0-8ac0-65651... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/publishpress-authors/tags/4.17.0/src/modules/multiple... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/publishpress-authors/tags/4.18.0/src/core/Classes/Aut... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: muhammad nizar (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-16T13:43:43.000ZVendor Notified
CNA2026-10-30T19:34:54.000ZDisclosed

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