CVE-2026-15990 Formidable Charts <= 2.0.1 - Unauthenticated Arbitrary File Read via 'frm_graph' Parameter
Unauthenticated attackers can read arbitrary server files via directory traversal in the Formidable Charts WordPress plugin.
- 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-2026-15990?
CVE-2026-15990 is a high-severity path traversal vulnerability in Strategy11 Formidable Charts, published on 26 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Formidable Charts plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.0.1 via the 'frm_graph' parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Successful exploitation requires Formidable Forms Lite, Formidable Forms Pro, and Formidable Charts to be active and requires the wp-content/uploads/frm-charts/ directory to exist, normally after an image-format chart is rendered.
Weakness: CWE-22
Which versions are affected by CVE-2026-15990?
How do I fix CVE-2026-15990?
No fix has been published for CVE-2026-15990 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-2026-15990 being exploited?
There is no known exploitation of CVE-2026-15990 in the wild and no public exploit code.
Sources
Also known as GHSA-83fw-wqq3-pqp2.