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CVE-2026-15604— Toocheke Companion <= 2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'series_bg_color' Post Meta

Quick assessment

Affected
toocheke Toocheke Companion
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 Toocheke Companion是WordPress组织的一款网站配套功能扩展插件。 WordPress Toocheke Companion 2.10及之前版本存在跨站脚本漏洞，该漏洞源于对'series_bg_color' post meta字段的输入清理和输出转义不足，可能导致具有贡献者级别及以上权限的认证攻击者注入任意Web脚本，在管理员访问系列列表页面时执行。

CVSS 6.4 · Medium EPSS 0.33% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
toocheke Toocheke Companion ≤ 2.10 affected
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I. Basic Information for CVE-2026-15604

Vulnerability Information
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Vulnerability Title
Toocheke Companion <= 2.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'series_bg_color' Post Meta
Source: CVE Program / CVE List V5
Vulnerability Description
The Toocheke Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.10 via the 'series_bg_color' post meta field. This is due to insufficient input sanitization in the toocheke_series_bg_color_save() function (which stores the raw $_POST value in post meta) and insufficient output escaping in the series admin column rendering (where the stored value is concatenated into a style attribute without esc_attr()). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user, such as an administrator, accesses the series list table in the admin dashboard.
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 Toocheke Companion 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Toocheke Companion是WordPress组织的一款网站配套功能扩展插件。 WordPress Toocheke Companion 2.10及之前版本存在跨站脚本漏洞，该漏洞源于对'series_bg_color' post meta字段的输入清理和输出转义不足，可能导致具有贡献者级别及以上权限的认证攻击者注入任意Web脚本，在管理员访问系列列表页面时执行。
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
toocheke Toocheke Companion 0 ~ 2.10 -

II. Public POCs for CVE-2026-15604

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III. Intelligence Information for CVE-2026-15604

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Patches & Fixes for CVE-2026-15604 (1)

Security Blog Posts for CVE-2026-15604 (1)

IV. Related Vulnerabilities

Same product: Toocheke Companion
Same vendor: toocheke
Same weakness: CWE-79

V. Comments for CVE-2026-15604

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