CVE-2026-112103 Details
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.
A vulnerability exists in f3-factory fatfree-core versions prior to 3.9.2, specifically within the HTTP Client component. The issue arises in the '_curl' function of 'web.php', where TLS certificate verification is improperly managed. This flaw allows remote attacks, albeit with high complexity, by disabling certificate chain validation, thereby accepting self-signed certificates for the correct hostname. Consequently, a network-adjacent attacker could intercept Basic Authentication credentials, session cookies, and custom headers, or manipulate API responses.
Users should upgrade to f3-factory fatfree-core version 3.9.3, where this vulnerability has been addressed by re-enabling proper TLS certificate verification. The updated version is available on the project's GitHub releases page.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 19, 2026CISA-ADP
Assessed Oct 19, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/f3-factory/fatfree-core/ | [email protected] | Vendor |
| https://github.com/f3-factory/fatfree-core/commit/a2c755c8dc9ad0eb7d5fd261b09aff90f649433c | [email protected] | Source CodeVendor |
| https://github.com/f3-factory/fatfree-core/issues/412 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/f3-factory/fatfree-core/releases/tag/3.9.3 | [email protected] | Release NotesVendor |
| https://vuldb.com/cve/CVE-2026-112103 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/1013092 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/422019 | [email protected] | BundlePermission Required |
| https://vuldb.com/vuln/422019/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
| CWE-295 | Improper Certificate Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| f3-factory fatfree-core | <= 3.9.2 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 19, 2026 | CVE Modified | CISA-ADP |
| Oct 19, 2026 | New CVE Received | [email protected] |