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CVE-2026-43887
HIGH · CVSS 7.3
EPSS exploitation probability: 0%
Published 2026-05-11T22:22:13.493 · Last modified 2026-06-17T10:50:01.867

Summary

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.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.