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

Quick assessment

Affected
error311 FileRise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FileRise是Ryan个人开发者的一个轻量级、自托管的基于web的文件管理器。 FileRise 3.10.0之前版本存在安全漏洞，该漏洞源于ONLYOFFICE集成存在访问控制缺陷，可能导致具有只读访问权限的认证用户获取文件签名保存回调URL并伪造ONLYOFFICE保存回调以覆盖文件。

CVSS 7.1 · High EPSS 0.38% · P30
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I. Basic Information for CVE-2026-33330

Vulnerability Information
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Vulnerability Title
FileRise ONLYOFFICE integration allows read-only users to overwrite files via forged save callback
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
FileRise 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FileRise是Ryan个人开发者的一个轻量级、自托管的基于web的文件管理器。 FileRise 3.10.0之前版本存在安全漏洞，该漏洞源于ONLYOFFICE集成存在访问控制缺陷，可能导致具有只读访问权限的认证用户获取文件签名保存回调URL并伪造ONLYOFFICE保存回调以覆盖文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
error311 FileRise < 3.10.0 -

II. Public POCs for CVE-2026-33330

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III. Intelligence Information for CVE-2026-33330

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Patches & Fixes for CVE-2026-33330 (1)

Vendor Advisories for CVE-2026-33330 (1)

Proof of Concept for CVE-2026-33330 (1)

IV. Related Vulnerabilities

Same product: FileRise
Same vendor: error311
Same weakness: CWE-863

V. Comments for CVE-2026-33330

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