CVE-2026-3335 Details.
Canto <= 3.1.1 - Missing Authorization to Unauthenticated File Upload
Atlas does not check this one. Needs an outside server.
To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one.
About CVE-2026-3335. What It Means.
The Canto plugin for WordPress is vulnerable to missing authorization in the copy-media.php upload flow. The file is directly accessible and accepts attacker-controlled parameters for the upload destination, allowing unauthenticated users to upload arbitrary files constrained to WordPress-allowed MIME types. The fbc_app_api parameter controls the domain WordPress fetches from via wp_safe_remote_get, enabling SSRF to attacker-controlled infrastructure.
Affected Product. What Is Hit.
- Vendor
- flightbycanto
- Product
- Flightbycanto Canto
References. Where To Read More.
- https://nvd.nist.gov/vuln/detail/CVE-2026-3335
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0777f759-6980-4572-a866-0210bd5f5085?source=cve
- https://plugins.trac.wordpress.org/browser/canto/tags/3.1.1/includes/lib/copy-media.php#L71
- https://plugins.trac.wordpress.org/browser/canto/tags/3.1.1/includes/lib/copy-media.php#L152
- https://plugins.trac.wordpress.org/browser/canto/tags/3.1.1/includes/lib/copy-media.php#L306
FAQ
Common Questions.
Canto <= 3.1.1 - Missing Authorization to Unauthenticated File Upload. The Canto plugin for WordPress is vulnerable to missing authorization in the copy-media.php upload flow. The file is directly accessible and accepts attacker-controlled parameters for the upload destination, allowing unauthenticated users to upload arbitrary files constrained to WordPress-allowed MIME types. The fbc_app_api parameter controls the domain WordPress fetches from via wp_safe_remote_get, enabling SSRF to attacker-controlled infrastructure.
No. To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one. The facts about CVE-2026-3335 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-3335 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Flightbycanto Canto to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-3335. Atlas does not run a check for it, so nothing here says whether a particular site is affected.