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.
Published: 2026-05-11
Score: 7.3 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 15 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 12 May 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Getoutline
Getoutline outline
Vendors & Products Getoutline
Getoutline outline

Mon, 11 May 2026 22:00:00 +0000

Type Values Removed Values Added
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.
Title Outline: Stored XSS via Comment Mentions
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N'}


Subscriptions

Getoutline Outline
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-15T18:23:58.951Z

Reserved: 2026-05-04T15:17:09.330Z

Link: CVE-2026-43887

cve-icon Vulnrichment

Updated: 2026-05-15T18:23:55.415Z

cve-icon NVD

Status : Deferred

Published: 2026-05-11T22:22:13.493

Modified: 2026-05-15T19:16:59.077

Link: CVE-2026-43887

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-12T09:00:06Z

Weaknesses