medium5.3
CVE-2026-6860
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.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | io.vertx:vertx-core | >= 4.3.4, <= 4.3.8 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Eclipse | Vert.X | from 4.3.4 through 4.5.26 from 5.0.0 through 5.0.11 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-3g76-f9xq-8vp6
- https://github.com/eclipse-vertx/vert.x/security/advisories/GHSA-3g76-f9xq-8vp6
- https://nvd.nist.gov/vuln/detail/CVE-2026-6860
- https://github.com/eclipse-vertx/vert.x/pull/6102
- https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/381
- https://github.com/vert-x3/wiki/wiki/4.5.27-Release-Notes
- https://vertx.io/blog/eclipse-vert-x-4-5-27
- https://vertx.io/blog/eclipse-vert-x-5-0-12