Description
A TCP client can perform a TLS handshake and present the server name extension with a server name that is accepted by a server wildcard name, e.g. if the server is configured with a certificate accepting *.example.com, any XYZ.example.com where xyz is a valid name can be used.
Published: 2026-05-06
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-3g76-f9xq-8vp6 Vert.x has a DoS via unbounded server-side SNI SslContext cache growth
History

Tue, 12 May 2026 16:15:00 +0000

Type Values Removed Values Added
Title Wildcard Server Name Misuse in TLS Handshake Enables Client to Connect to Any Subdomain

Tue, 12 May 2026 13:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-770
CPEs cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}


Wed, 06 May 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 06 May 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse vert.x
Vendors & Products Eclipse
Eclipse vert.x

Wed, 06 May 2026 12:00:00 +0000

Type Values Removed Values Added
Title Wildcard Server Name Misuse in TLS Handshake Enables Client to Connect to Any Subdomain
Weaknesses CWE-295

Wed, 06 May 2026 10:00:00 +0000

Type Values Removed Values Added
Description A TCP client can perform a TLS handshake and present the server name extension with a server name that is accepted by a server wildcard name, e.g. if the server is configured with a certificate accepting *.example.com, any XYZ.example.com where xyz is a valid name can be used.
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-05-12T20:29:09.712Z

Reserved: 2026-04-22T13:02:37.222Z

Link: CVE-2026-6860

cve-icon Vulnrichment

Updated: 2026-05-06T14:33:32.075Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-06T10:16:26.293

Modified: 2026-05-12T13:42:01.617

Link: CVE-2026-6860

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-12T16:00:13Z

Weaknesses