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Vulnerability record · CVE-2025-64487 · published 11 February 2026

CVE-2025-64487: Getoutline outline improper privilege management vulnerability

Getoutline · Outline

Outline is a service that allows for collaborative documentation. Prior to 1.1.0, a privilege escalation vulnerability exists in the Outline document management system due to inconsistent authorization checks between user and group membership management endpoints. This vulnerability is fixed in 1.1.0.

7.6 CVSS 3.1 High EPSS 0.20% · top 90.6% CWE-269 · Improper privilege management
7.6CVSS 3.1 base score
0.20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Outline is a service that allows for collaborative documentation. Prior to 1.1.0, a privilege escalation vulnerability exists in the Outline document management system due to inconsistent authorization checks between user and group membership management endpoints. This vulnerability is fixed in 1.1.0.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/outline/outline/releases/tag/v1.1.0 Release Notes
https://github.com/outline/outline/security/advisories/GHSA-c8xf-3j86-7686 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.1CVE-2026-33640Getoutline outline improper restriction of authentication attempts vulnerabilityOutline is a service that allows for collaborative documentation. Outline implements an Email OTP login flow for users not associated with an Identit…EPSS 0.55%8.8CVE-2026-24901Getoutline outline insecure direct object reference vulnerabilityOutline is a service that allows for collaborative documentation. Prior to 1.4.0, an Insecure Direct Object Reference (IDOR) vulnerability in the doc…EPSS 0.31%8.8CVE-2024-37829Getoutline outline vulnerabilityAn issue in Outline <= v0.76.1 allows attackers to execute a session hijacking attack via user interaction with a crafted magic sign-in link.EPSS 0.74%8.5CVE-2023-54331Getoutline outline unquoted search path vulnerabilityOutline 1.6.0 contains an unquoted service path vulnerability that allows local attackers to potentially execute arbitrary code with elevated system …EPSS 0.22%7.7CVE-2026-41649Getoutline outline insecure direct object reference vulnerabilityOutline is a service that allows for collaborative documentation. The `shares.create` API endpoint starting in version 0.86.0 and prior to version 1.…EPSS 0.42%6.9CVE-2025-68663Getoutline outline improper authentication vulnerabilityOutline is a service that allows for collaborative documentation. Prior to 1.1.0, a vulnerability was found in Outline's WebSocket authentication mec…EPSS 0.25%6.8CVE-2025-58351Getoutline outline cross-site scripting vulnerabilityOutline is a service that allows for collaborative documentation. In versions 0.72.0 through 0.83.0, Outline introduced a feature which facilitates l…EPSS 0.39%6.5CVE-2026-44695Getoutline outline cross-site request forgery vulnerabilityOutline is a service that allows for collaborative documentation. Prior to 1.7.1, the Slack integration callback for GET /auth/slack.post accepts an …EPSS 0.15%

Source: NIST National Vulnerability Database (record CVE-2025-64487), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.