CVE-2026-6860

Published May 6, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

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

Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse vert.x
Vendors & Products Eclipse
Eclipse vert.x
Type Values Removed Values Added
Title Wildcard Server Name Misuse in TLS Handshake Enables Client to Connect to Any Subdomain
Weaknesses CWE-295
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
eclipse
Published
Updated
May 12, 2026, 8:29 PM
Reserved
Apr 22, 2026, 1:02 PM
Status
Analyzed
Published
May 6, 2026, 10:16 AM
Modified
Oct 26, 2026, 7:10 PM