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CVE-2024-40626— Stored Cross-site Scripting (XSS) vulnerability in Outline editor

Quick assessment

Affected
outline outline
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Outline是美国Outline开源的一个工具。用于为成长中的团队提供最快的 wiki 和知识库。 Outline v0.77.3之前版本存在安全漏洞，该漏洞源于存在存储型跨站脚本(XSS)，经过身份验证的用户可以创建包含恶意JavaScript载荷的文档。

CVSS 7.3 · High EPSS 0.52% · P42
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I. Basic Information for CVE-2024-40626

Vulnerability Information
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Vulnerability Title
Stored Cross-site Scripting (XSS) vulnerability in Outline editor
Source: CVE Program / CVE List V5
Vulnerability Description
Outline is an open source, collaborative document editor. A type confusion issue was found in ProseMirror’s rendering process that leads to a Stored Cross-Site Scripting (XSS) vulnerability in Outline. An authenticated user can create a document containing a malicious JavaScript payload. When other users view this document, the malicious Javascript can execute in the origin of Outline. Outline includes CSP rules to prevent third-party code execution, however in the case of self-hosting and having your file storage on the same domain as Outline a malicious payload can be uploaded as a file attachment and bypass those CSP restrictions. This issue has been addressed in release version 0.77.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Outline是美国Outline开源的一个工具。用于为成长中的团队提供最快的 wiki 和知识库。 Outline v0.77.3之前版本存在安全漏洞，该漏洞源于存在存储型跨站脚本(XSS)，经过身份验证的用户可以创建包含恶意JavaScript载荷的文档。
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 < 0.77.3 -

II. Public POCs for CVE-2024-40626

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6139 chars
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Trigger conditions & impact
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III. Intelligence Information for CVE-2024-40626

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Vendor Advisories for CVE-2024-40626 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2024-40626

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