CVE-2026-39559 WordPress Uppercase theme < 1.2.2 - Local File Inclusion vulnerability
Unauthenticated attackers can read arbitrary local files via a Local File Inclusion vulnerability in the Uppercase WordPress theme.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39559?
CVE-2026-39559 is a high-severity path traversal vulnerability in codesupplyco Uppercase, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated Local File Inclusion in Uppercase < 1.2.2 versions.
Weakness: CWE-98
Which versions are affected by CVE-2026-39559?
How do I fix CVE-2026-39559?
No fix has been published for CVE-2026-39559 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-2026-39559 being exploited?
There is no known exploitation of CVE-2026-39559 in the wild and no public exploit code.
Sources
Also known as GHSA-5qf8-gj59-557x.