error311 FileRise up to 3.15.x Archive Extraction ZipArchive::extractTo unrestricted upload

Summaryinfo

A vulnerability has been found in error311 FileRise up to 3.15.x and classified as critical. This affects the function ZipArchive::extractTo of the component Archive Extraction. This manipulation causes unrestricted upload. This vulnerability is tracked as CVE-2026-57491. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in error311 FileRise up to 3.15.x and classified as critical. Affected by this vulnerability is the function ZipArchive::extractTo of the component Archive Extraction. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.16.0, FileRise archive extraction does not apply UploadNamePolicy::isAllowedForWrite() before ZipArchive::extractTo() writes entries into the destination directory. An authenticated user with upload and extract permissions can place a blocked extension such as a PHP-family file inside a ZIP and cause it to be written to disk even when normal uploads reject that filename. Post-extraction metadata pruning does not remove the blocked file, so deployments that execute uploaded content may permit code execution. This issue is fixed in version 3.16.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-57491 since 06/24/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

Upgrading to version 3.16.0 eliminates this vulnerability.

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Productinfo

Vendor

• error311

Name

• FileRise

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15

Website

• Product: https://github.com/error311/FileRise/

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