HIGHCVE-2026-43887Published Modified CNA GitHub_M
CVE-2026-43887: Outline: Stored XSS via Comment Mentions
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.
Metrics
- CVSS v3.1
- 7.3
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- outline / outline>= 0.84.0, < 1.7.0
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N