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CVE-2026-2594— Smart Custom Fields <= 5.0.7 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Title

Quick assessment

Affected
inc2734 Smart Custom Fields
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.

WordPress Smart Custom Fields是WordPress基金会的一款定制字段管理软件。 WordPress Smart Custom Fields 5.0.7及之前版本存在跨站脚本漏洞，该漏洞源于对上传图片附件标题的输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有作者级别及以上权限）注入任意Web脚本，在用户访问被注入页面时执行。

CVSS 6.4 · Medium EPSS 0.32% · P23

Affected Version Matrix 1

VendorProduct Version RangeStatus
inc2734 Smart Custom Fields ≤ 5.0.7 affected
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I. Basic Information for CVE-2026-2594

Vulnerability Information
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Vulnerability Title
Smart Custom Fields <= 5.0.7 - Authenticated (Author+) Stored Cross-Site Scripting via Attachment Title
Source: CVE Program / CVE List V5
Vulnerability Description
The Smart Custom Fields plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 5.0.7. This is due to insufficient input sanitization and output escaping of uploaded image attachment titles. 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 accesses an injected page. NOTE: This vulnerability was partially patched in 5.0.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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
Vulnerability Title
WordPress Smart Custom Fields 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Smart Custom Fields是WordPress基金会的一款定制字段管理软件。 WordPress Smart Custom Fields 5.0.7及之前版本存在跨站脚本漏洞，该漏洞源于对上传图片附件标题的输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有作者级别及以上权限）注入任意Web脚本，在用户访问被注入页面时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
inc2734 Smart Custom Fields 0 ~ 5.0.7 -

II. Public POCs for CVE-2026-2594

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III. Intelligence Information for CVE-2026-2594

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Patches & Fixes for CVE-2026-2594 (2)

Vendor Advisories for CVE-2026-2594 (1)

IV. Related Vulnerabilities

Same product: Smart Custom Fields
Same vendor: inc2734
Same weakness: CWE-79

V. Comments for CVE-2026-2594

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