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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/outline/outline/security/advisories/GHSA-rqrg-f3qc-xvgh
Scores
CVSS v3
7.3
EPSS
0.0024
EPSS Percentile
15.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (1)
outline/outline
>= 0.84.0, < 1.7.0
Published
May 11, 2026
Tracked Since
May 12, 2026