What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-16 · updated 2026-08-20
• Weakness: CWE-79

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.

Affected products

• Toocheke Companion: through 2.10

References

• https://plugins.trac.wordpress.org/browser/toocheke-companion/tags/2.11/inc/class-toocheke-companion-admin-columns.php#L296
• https://plugins.trac.wordpress.org/browser/toocheke-companion/tags/2.3/inc/class-toocheke-companion-admin-columns.php#L296
• https://plugins.trac.wordpress.org/browser/toocheke-companion/tags/2.3/inc/class-toocheke-companion-metaboxes.php#L959
• https://plugins.trac.wordpress.org/browser/toocheke-companion/tags/2.3/inc/class-toocheke-companion-metaboxes.php#L960
• https://www.wordfence.com/threat-intel/vulnerabilities/id/1bf78bc1-55d7-4230-913f-d7c521225367?source=cve

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