CVE-2025-64487

high

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.

References

https://github.com/outline/outline/security/advisories/GHSA-c8xf-3j86-7686

https://github.com/outline/outline/releases/tag/v1.1.0

Details

Source: Mitre, NVD

Published: 2026-02-11

Updated: 2026-02-20

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 7.6

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

Severity: High

EPSS

EPSS: 0.0001