Cotonti 1.0.0 modules/pfs/inc/pfs.main cot_check_xg cross-site request forgery

Summaryinfo

A vulnerability has been found in Cotonti 1.0.0 and classified as problematic. Impacted is the function cot_check_xg of the file modules/pfs/inc/pfs.main. The manipulation leads to cross-site request forgery. This vulnerability is traded as CVE-2026-55744. It is possible to initiate the attack remotely. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cotonti 1.0.0. This issue affects the function cot_check_xg of the file modules/pfs/inc/pfs.main. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. Using CWE to declare the problem leads to CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. Impacted is integrity. The summary by CVE is:

Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to Cross-Site Request Forgery in the Personal File Storage (PFS) module. In modules/pfs/inc/pfs.main.php, the file upload action ('a=upload') processes uploaded files without calling cot_check_xg() to validate the anti-CSRF token, even though sibling actions such as 'delete' (line 272) do. A remote attacker who lures an authenticated user into visiting a malicious page can force the browser to submit a forged multipart request that uploads arbitrary files into the victim's PFS storage.

The weakness was shared by Saidakbarxon Maxsudxonov. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-55744 since 06/17/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-37855). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Cotonti

Version

• 1.0.0

Website

• Product: https://github.com/Cotonti/Cotonti/

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

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