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Outline CVE-2025-68663

MEDIUM
Improper Authentication (CWE-287)
2026-02-11 security-advisories@github.com
5.3
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
CVE Published
Feb 11, 2026 - 21:16 nvd
MEDIUM 5.3

DescriptionGitHub Advisory

Outline is a service that allows for collaborative documentation. Prior to 1.1.0, a vulnerability was found in Outline's WebSocket authentication mechanism that allows suspended users to maintain or establish real-time WebSocket connections and continue receiving sensitive operational updates after their account has been suspended. This vulnerability is fixed in 1.1.0.

AnalysisAI

Outline is a service that allows for collaborative documentation. [CVSS 5.3 MEDIUM]

Technical ContextAI

Classified as CWE-287 (Improper Authentication). Affects Outline. Outline is a service that allows for collaborative documentation. Prior to 1.1.0, a vulnerability was found in Outline's WebSocket authentication mechanism that allows suspended users to maintain or establish real-time WebSocket connections and continue receiving sensitive operational updates after their account has been suspended. This vulnerability is fixed in 1.1.0.

RemediationAI

Fixed in version 1.1.0.. Restrict network access to the affected service where possible.

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CVE-2026-43888 HIGH
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Zip extraction sandbox escape in Outline (self-hosted collaborative knowledge base) before 1.7.0 lets an authenticated u

CVE-2026-43886 HIGH
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Privilege escalation in Outline (the collaborative wiki/knowledge-base) versions 0.84.0 through 1.6.1 lets a malicious O

CVE-2026-24901 HIGH
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An Insecure Direct Object Reference (IDOR) vulnerability in Outline's document restoration logic allows any authenticate

CVE-2026-43890 HIGH
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Broken object-level authorization in Outline (self-hosted collaborative documentation) versions 0.84.0 through 1.7.0 let

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CVE-2025-68663 vulnerability details – vuln.today

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