f3-factory fatfree-core up to 3.9.2 HTTP Client web.php _curl certificate validation

Summaryinfo

A vulnerability has been found in f3-factory fatfree-core up to 3.9.2 and classified as problematic. This issue affects the function _curl of the file web.php of the component HTTP Client. Performing a manipulation results in certificate validation. This vulnerability is cataloged as CVE-2026-112103. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Detailsinfo

A vulnerability classified as problematic has been found in f3-factory fatfree-core up to 3.9.2. This affects the function _curl of the file web.php of the component HTTP Client. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on integrity.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-112103. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product. By approaching the search of inurl:web.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.9.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch a2c755c8dc9ad0eb7d5fd261b09aff90f649433c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• f3-factory

Name

• fatfree-core

Version

• 3.9.0
• 3.9.1
• 3.9.2

License

• open-source

Website

• Product: https://github.com/f3-factory/fatfree-core/

CPE 2.3info

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CPE 2.2info

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Submitinfo

Accepted

• Submit #1013092: fatfree fatfree-core <= 3.9.2 Information Disclosure (by NeoWSY)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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