CVE-2026-3335
The Canto plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1 via the file.
Published Mar 21, 2026 · updated Jun 17, 2026
The Canto plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1 via the file. This is due to the file being directly accessible without any authentication, authorization, or nonce checks, and the and URL components being accepted as user-supplied POST parameters rather than read from admin-configured options. Since the attacker controls both the destination server and the value, the entire fetch-and-upload chain is attacker-controlled — the server never contacts Canto's legitimate API, and the uploaded file originates entirely from the attacker's infrastructure. This makes it possible for unauthenticated attackers to upload arbitrary files (constrained to WordPress-allowed MIME types) to the WordPress uploads directory. Additional endpoints ( , , , ) are also directly accessible without authentication and make requests using a user-supplied parameter combined with an admin-configured subdomain.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Mar 21, 2026 · NIST NVD
Detected
The Canto plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1 via the file. This is due to the file being directly accessible without any authentication, authorization, or nonce checks, and the and URL components being accepted as user-supplied POST parameters rather than read from admin-configured options. Since the attacker controls both the de
Jun 17, 2026 · NIST NVD
Updated
The Canto plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1 via the file. This is due to the file being directly accessible without any authentication, authorization, or nonce checks, and the and URL components being accepted as user-supplied POST parameters rather than read from admin-configured options. Since the attacker controls both the de
Sources
- CVE.orgVulnerability recordCVE-2026-3335
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-3335
The Canto plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 3.1.1 via the file. This is due to the file being directly accessible without any authentication, authorization, or
nvd.nist.gov