CVE-2024-40626

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.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/outline/outline/security/advisories/GHSA-888c-mvg8-v6wh	Vendor Advisory Exploit
https://github.com/outline/outline/security/advisories/GHSA-888c-mvg8-v6wh	Vendor Advisory Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:getoutline:outline:*:*:*:*:*:*:*:*

History

10 Oct 2025, 15:30

Type	Values Removed	Values Added
CPE		cpe:2.3:a:getoutline:outline::::::::
First Time		Getoutline outline Getoutline
References	~~() https://github.com/outline/outline/security/advisories/GHSA-888c-mvg8-v6wh -~~	() https://github.com/outline/outline/security/advisories/GHSA-888c-mvg8-v6wh - Vendor Advisory, Exploit

Information

Published : 2024-07-16 17:15

Updated : 2025-10-10 15:30

NVD link : CVE-2024-40626

Mitre link : CVE-2024-40626

CVE.ORG link : CVE-2024-40626

JSON object : View

Products Affected

getoutline

outline

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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