What is the CVSS score of EUVD-2026-29331?

EUVD-2026-29331 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Is there a patch available for EUVD-2026-29331?

Yes, a patch is available for EUVD-2026-29331. Update the affected software to the latest version immediately.

Outline EUVD-2026-29331

| CVE-2026-43887 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-05-11 GitHub_M

XSS RCE Outline

7.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.3 HIGH

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Patch available

May 11, 2026 - 23:03 EUVD

CVE Published

May 11, 2026 - 21:05 nvd

HIGH 7.3

DescriptionGitHub Advisory

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.

Analysis

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EUVD-2026-29331 vulnerability details – vuln.today

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