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CVE-2025-58351— Outline's Local File Storage Feature can Cause CSP Bypass

Quick assessment

Affected
outline outline
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.

Outline是Outline开源的一个知识库。 Outline 0.83.0及之前版本存在跨站脚本漏洞，该漏洞源于本地文件系统存储功能存在CSP绕过。

CVSS 6.8 · Medium EPSS 0.39% · P30
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I. Basic Information for CVE-2025-58351

Vulnerability Information
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Vulnerability Title
Outline's Local File Storage Feature can Cause CSP Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Outline is a service that allows for collaborative documentation. In versions 0.72.0 through 0.83.0, Outline introduced a feature which facilitates local file system storage capabilities as an optional file storage strategy. This feature allowed a CSP bypass as well as a ContentType bypass that might facilitate further attacks. In the case of self-hosting and using Outline FILE_STORAGE=local on the same domain as the Outline application, a malicious payload can be uploaded as a file attachment and bypass those CSP restrictions, allowing script execution within the context of another user. This is fixed in version 0.84.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Outline 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Outline是Outline开源的一个知识库。 Outline 0.83.0及之前版本存在跨站脚本漏洞，该漏洞源于本地文件系统存储功能存在CSP绕过。
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
outline outline >= 0.72.0, < 0.84.0 -

II. Public POCs for CVE-2025-58351

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III. Intelligence Information for CVE-2025-58351

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IV. Related Vulnerabilities

Same product: outline
Same vendor: outline
Same weakness: CWE-79

V. Comments for CVE-2025-58351

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