Outline
CVE-2024-40626
MEDIUM
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
Outline is an open source, collaborative document editor. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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. Affected products include: Getoutline Outline. Version information: version 0.77.3..
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
An issue in Outline <= v0.76.1 allows attackers to execute a session hijacking attack via user interaction with a crafte
Outline versions up to - contains a vulnerability that allows attackers to potentially execute arbitrary code with eleva
An issue in Outline <= v0.76.1 allows attackers to redirect a victim user to a malicious site via intercepting and chang
Outline versions prior to 1.4.0 fail to validate attachment file paths during JSON import, allowing authenticated attack
Cross-site Scripting (XSS) - Stored in GitHub repository outline/outline prior to 0.70.1. Rated medium severity (CVSS 5.
Cross-site Scripting (XSS) - Stored in GitHub repository outline/outline prior to v0.64.4. Rated medium severity (CVSS 5
Account takeover in Outline collaborative documentation service versions 0.86.0 through 1.5.x enables unauthenticated at
Zip extraction sandbox escape in Outline (self-hosted collaborative knowledge base) before 1.7.0 lets an authenticated u
Privilege escalation in Outline (the collaborative wiki/knowledge-base) versions 0.84.0 through 1.6.1 lets a malicious O
An Insecure Direct Object Reference (IDOR) vulnerability in Outline's document restoration logic allows any authenticate
Broken object-level authorization in Outline (self-hosted collaborative documentation) versions 0.84.0 through 1.7.0 let
Cross-workspace document disclosure in Outline (getoutline) versions 0.86.0 through 1.6.x lets an authenticated user min
Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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