cve-2026-58480
CRITICAL CVSS 9.2 vulncheck_kev
Description
Blocksy Companion Pro plugin for WordPress before 2.1.47 contains an unauthenticated arbitrary file upload vulnerability that allows attackers to upload executable files by bypassing extension validation in the save_attachments function exposed through the Advanced Reviews feature. Attackers can exploit the Custom Fonts extension's flawed strpos() substring check by uploading double-extension filenames such as shell.woff2.php, causing the validation to pass on the substring match while the web server executes the file as PHP, achieving remote code execution.
Timeline
- Published
- 2026-07-02 00:00 UTC
- Last Modified
- 2026-07-02
CVSS Details
CVSS details not available.
Affected Products
No product information available.
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
{
"cvss": 9.2,
"datePublished": "2026-07-02T00:00:00Z",
"dateUpdated": "2026-07-02T00:00:00Z",
"description": "Blocksy Companion Pro plugin for WordPress before 2.1.47 contains an unauthenticated arbitrary file upload vulnerability that allows attackers to upload executable files by bypassing extension validation in the save_attachments function exposed through the Advanced Reviews feature. Attackers can exploit the Custom Fonts extension's flawed strpos() substring check by uploading double-extension filenames such as shell.woff2.php, causing the validation to pass on the substring match while the web server executes the file as PHP, achieving remote code execution.",
"dueDate": "",
"id": "CVE-2026-58480",
"kev_catalogs": [
"vulncheck"
],
"knownRansomwareCampaignUse": "Unknown",
"product": "Blocksy Companion",
"requiredAction": "Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.",
"severity": "CRITICAL",
"source": "vulncheck_kev",
"title": "creativethemes blocksy_companion Unrestricted Upload of File with Dangerous Type",
"vendor": "Creative Themes"
}