Auth bypass in Getoutline Outline
CVE-2025-68663
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Getoutline Outline
- Outline — versions < 1.1.0
Weakness classification (CWE)
References
- github.com/outline/outline/security/advisories/GHSA-mx2c-3g2x-5m9m (Vendor Advisory)
- github.com/outline/outline/releases/tag/v1.1.0 (Release Notes)
Frequently asked questions
- What is CVE-2025-68663?
- CVE-2025-68663 is a medium-severity vulnerability in Getoutline Outline, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-02-11.
- How severe is CVE-2025-68663?
- Medium severity. CVSS v3 base score is 5.3 out of 10.