CVE-2026-43887

Published: May 11, 2026Modified: Jun 17, 2026Deferred

7.3

Vector

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

Exploitability: 2.1 / Impact: 5.2

Source: security-advisories@github.com (Secondary)

Description

Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.6.1, the Outline comment section permits users to mention other users; however, the backend does not validate or sanitize the href attribute associated with these mentions. As a result, potentially dangerous protocols (e.g., javascript:) are not filtered, introducing a risk of client-side code execution. This vulnerability is fixed in 1.7.0.

Related CWEs

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (2)

https://github.com/outline/outline/security/advisories/GHSA-rqrg-f3qc-xvgh

Source: security-advisories@github.com

https://github.com/outline/outline/security/advisories/GHSA-rqrg-f3qc-xvgh

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.