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Assigner | GitHub_M |
Reserved | 2024-07-08 |
Published | 2024-07-16 |
Updated | 2024-08-02 |
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:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
https://github.com/outline/outline/security/advisories/GHSA-888c-mvg8-v6wh