PT-2026-50634 · Vanyukov · Offload
Yat Wu
·
Published
2026-06-18
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Updated
2026-06-18
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CVE-2026-9860
CVSS v3.1
8.8
High
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
The Offload, AI & Optimize with Cloudflare Images plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.10.2 via the 'account-id' parameter parameter. This is due to insufficient privilege enforcement on the cf images do setup AJAX handler, which requires only the upload files capability (Author+) rather than manage options before writing to wp-config.php, combined with the absence of single-quote escaping — sanitize text field() does not strip single quotes, and filter input(INPUT POST) bypasses wp magic quotes() slashing — allowing a single quote in the account-id or api-key parameter to break out of the single-quoted PHP string literal in the write config() define() statement. This makes it possible for authenticated attackers, with author-level access and above, to execute code on the server. This is possible because the 'cf-images-nonce' nonce required by the AJAX handler is exposed to all Author-level and above users on wp-admin/upload.php via the CFImages JavaScript object, meaning any upload-capable user can satisfy the nonce check and reach the vulnerable wp-config.php write path.
Fix
Unrestricted File Upload
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Weakness Enumeration
Related Identifiers
Affected Products
Offload