What’s Vulnerable › Vulnerabilities

CVE-2026-57491: FileRise: ZIP extraction writes blocked file extensions to disk, bypassing the upload blocklist

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-15
• Weakness: CWE-434

Description

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.

Affected products

• error311 FileRise: before 3.16.0

References

• https://github.com/error311/FileRise/commit/f7114ca2a4e624238dda0d097a07ad6b05c11bb6
• https://github.com/error311/FileRise/releases/tag/v3.16.0
• https://github.com/error311/FileRise/security/advisories/GHSA-c4g2-8fg6-5xrr
• https://github.com/error311/FileRise/security/advisories/GHSA-c4g2-8fg6-5xrr

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