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CVE PROGRAM SOURCE RECORD7.3 High

CVE-2026-43887

Outline: Stored XSS via Comment Mentions

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

outline outline

  • >= 0.84.0, < 1.7.0affected

References