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CVE-2026-85657— Co-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

Quick assessment

Affected
publishpress Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

使用 PublishPress Authors 插件的 WordPress 中，“Co-Authors”、“Multiple Authors” 和 “Guest Authors” 功能在作者信息框中，通过作者信息页面上的“profile_fields_user_email_value_prefix”参数存在存储型跨站脚本（Stored Cross-Site Scripting）漏洞，影响所有包含 4.15.0 及之前的所有版本，原因在于输入数据未充分进行净化处理且输出未进行转义。这使得拥有“Author”权限或更高

CVSS 5.4 · Medium

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-85657

Vulnerability Information
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Vulnerability Title
Co-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
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
publishpress Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors 0 ~ 4.15.0 -

II. Public POCs for CVE-2026-85657

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III. Intelligence Information for CVE-2026-85657

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Vendor Advisories for CVE-2026-85657 (1)

IV. Related Vulnerabilities

Same product: Co-Authors, Multiple Authors and Guest Authors in an Author Box with PublishPress Authors
Same vendor: publishpress
Same weakness: CWE-79

V. Comments for CVE-2026-85657

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