gtsteffaniak filebrowser prior 1.1.3-stable/1.2.6-beta Download Link information disclosure

Summaryinfo

A vulnerability, which was classified as problematic, has been found in gtsteffaniak filebrowser. This impacts an unknown function of the component Download Link Handler. This manipulation causes information disclosure. The identification of this vulnerability is CVE-2026-27611. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in gtsteffaniak filebrowser and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Download Link Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to versions 1.1.3-stable and 1.2.6-beta, when users share password-protected files, the recipient can completely bypass the password and still download the file. This happens because the API returns a direct download link in the details of the share, which is accessible to anyone with JUST THE SHARE LINK, even without the password. Versions 1.1.3-stable and 1.2.6-beta fix the issue.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-27611 since 02/20/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 1.1.3-stable or 1.2.6-beta eliminates this vulnerability. Applying the patch c51b0ee9738fa4599b409f47c5bf820ef31b4fe1 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.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• gtsteffaniak

Name

• filebrowser

License

• open-source

Website

• Product: https://github.com/gtsteffaniak/filebrowser/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion