What’s Vulnerable › Vulnerabilities

CVE-2026-6860

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-06 · updated 2026-10-26
• Weakness: CWE-770

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.

Affected products

• Eclipse Foundation Eclipse Vert.x: from 4.3.4 through 4.5.26; from 5.0.0 through 5.0.11

References

• https://github.com/eclipse-vertx/vert.x/pull/6102
• https://github.com/eclipse-vertx/vert.x/security/advisories/GHSA-3g76-f9xq-8vp6
• https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/381
• https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/381

Get alerted when CVE-2026-6860 or the next vulnerability affects your stack