CVE-2026-25062: Getoutline Outline

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Outline is a service that allows for collaborative documentation. Prior to 1.4.0, during the JSON import process, the value of attachments[].key from the imported JSON is passed directly to path.join(rootPath, node.key) and then read using fs.readFile without validation. By embedding path traversal sequences such as ../ or absolute paths, an attacker can read arbitrary files on the server and import them as attachments. This vulnerability is fixed in 1.4.0.

Affected products

• Getoutline Outline: before 1.4.0 (fixed in 1.4.0)

Published 2026-02-11. Last modified 2026-06-17.