CVE-2026-107321 W3 Total Cache < 2.10.6 - Author+ Path Traversal via CDN Media Library Import
Authors can plant files that, when imported by admins, expose arbitrary server files to unauthenticated users via path traversal.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-107321?
CVE-2026-107321 is a medium-severity path traversal vulnerability in Unknown W3 Total Cache, published on 10 Oct 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The W3 Total Cache WordPress plugin before 2.10.6 does not confine a media-import file copy to the document root, nor enforce an effective file-type restriction on it, allowing users with the Author role or higher to plant content that, once an administrator runs the import, copies an arbitrary server-readable file into a publicly served directory, exposing it to unauthenticated retrieval.
Weakness: CWE-22
Which versions are affected by CVE-2026-107321?
How do I fix CVE-2026-107321?
No fix has been published for CVE-2026-107321 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-107321 being exploited?
There is no known exploitation of CVE-2026-107321 in the wild and no public exploit code.
Sources
Also known as GHSA-445r-vc94-h34g.