filebrowser File Browser up to 2.63.16 Bolt backend DeleteWithPathPrefix userID unrestricted upload

Summaryinfo

A vulnerability categorized as critical has been discovered in filebrowser File Browser up to 2.63.16. This affects the function DeleteWithPathPrefix of the component Bolt backend. Such manipulation of the argument userID leads to unrestricted upload. This vulnerability is referenced as CVE-2026-62683. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in filebrowser File Browser up to 2.63.16 and classified as critical. Affected by this issue is the function DeleteWithPathPrefix of the component Bolt backend. The manipulation of the argument userID with an unknown input leads to a unrestricted upload vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser can leave a public directory share behind when the shared directory is deleted through a path with a trailing slash because the share cleanup path calls DeleteWithPathPrefix(file.Path, userID) and the Bolt backend performs the database prefix query with the unnormalized path before trimming the slash for boundary checks, so deleting /a/ does not delete the stored /a share and the stale public share exposes future content if the same path is recreated. This issue is fixed in version 2.63.17.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-62683 since 07/14/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

Upgrading to version 2.63.17 eliminates this vulnerability.

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Productinfo

Vendor

• filebrowser

Name

• File Browser

Version

• 2.63.0
• 2.63.1
• 2.63.2
• 2.63.3
• 2.63.4
• 2.63.5
• 2.63.6
• 2.63.7
• 2.63.8
• 2.63.9
• 2.63.10
• 2.63.11
• 2.63.12
• 2.63.13
• 2.63.14
• 2.63.15
• 2.63.16

CPE 2.3info

• 🔒
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CPE 2.2info

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