What is CVE-2026-6860?

CVE-2026-6860 is a medium-severity vulnerability in Eclipse Vert.x, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-05-06.

How severe is CVE-2026-6860?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Resource exhaustion in Eclipse Vert.x

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. if the server is configured with a certificate accepting *.example.com, any XYZ.example.com…

EPSS: 0.000 (1.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Eclipse Vert.x
Eclipse Foundation Vert.x — versions 4.3.4, 5.0.0

Weakness classification (CWE)

References

emo@eclipse.org (Exploit, Third Party Advisory, Issue Tracking)
emo@eclipse.org (Exploit, Vendor Advisory)
emo@eclipse.org (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2026-6860?: CVE-2026-6860 is a medium-severity vulnerability in Eclipse Vert.x, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-05-06.
How severe is CVE-2026-6860?: Medium severity. CVSS v3 base score is 5.3 out of 10.