CVE-2026-112103 f3-factory fatfree-core HTTP Client web.php _curl certificate validation
Improper certificate validation in the HTTP client allows attackers to bypass security checks, potentially enabling man-in-the-middle attacks.
- 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-2026-112103?
CVE-2026-112103 is a medium-severity vulnerability in f3-factory fatfree-core, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been found in f3-factory fatfree-core up to 3.9.2. This vulnerability affects the function _curl of the file web.php of the component HTTP Client. Such manipulation leads to improper certificate validation. The attack may be performed from remote. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. Upgrading to version 3.9.3 is able to resolve this issue. The name of the patch is a2c755c8dc9ad0eb7d5fd261b09aff90f649433c. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Which versions are affected by CVE-2026-112103?
How do I fix CVE-2026-112103?
No fix has been published for CVE-2026-112103 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-112103 being exploited?
There is no known exploitation of CVE-2026-112103 in the wild and no public exploit code.
Sources
Also known as GHSA-93rm-6gqp-hr45.