What’s Vulnerable › Vulnerabilities

CVE-2026-33330: FileRise ONLYOFFICE integration allows read-only users to overwrite files via forged save callback

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-24 · updated 2026-06-17
• Weakness: CWE-863

Description

FileRise is a self-hosted web file manager / WebDAV server. Prior to version 3.10.0, a broken access control issue in FileRise's ONLYOFFICE integration allows an authenticated user with read-only access to obtain a signed save callbackUrl for a file and then directly forge the ONLYOFFICE save callback to overwrite that file with attacker-controlled content. This issue has been patched in version 3.10.0.

Affected products

• error311 FileRise: before 3.10.0 — fixed in 3.10.0

How to fix

Upgrade to a fixed version: error311 FileRise 3.10.0. Check the vendor advisory for mitigations.

References

• https://github.com/error311/FileRise/commit/3871f9fd1661688bed4f7dd23912be0ebf50973c
• https://github.com/error311/FileRise/releases/tag/v3.10.0
• https://github.com/error311/FileRise/security/advisories/GHSA-6c3j-f4x4-36m3

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