VulnerabilityAnalyzed

CVE-2025-64487

Outline is a service that allows for collaborative documentation.

HIGH 7.6EPSS 0.20%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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: 7.6 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
EPSS: 0.20% probability · 11th percentile
CISA KEV: Not listed
Weakness: CWE-269
Affected: getoutline/outline
Source: security-advisories@github.com

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.