Outline is vulnerable to privilege escalation vulnerability in document sharing

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.

Scores

EPSS (exploitation in 30 days)

0.23% · top 86% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.6.

Weakness

• CWE-269: Improper Privilege Management (opens in a new tab)All about CWE-269 and its CVEs

Affected products

• outline · outline

  • affected <= 1.0.1

References (2)

• https://github.com/outline/outline/security/advisories/GHSA-c8xf-3j86-7686 (opens in a new tab)x_refsource_CONFIRM
• https://github.com/outline/outline/releases/tag/v1.1.0 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2025-64487](https://trackcve.app/badge/CVE-2025-64487.svg)](https://trackcve.app/cve/CVE-2025-64487)

Record last updated 11 Feb 2026, 20:52 UTC.