What is CVE-2026-55996?

CVE-2026-55996 is a medium-severity vulnerability in Suse Rancher, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2026-08-05.

How severe is CVE-2026-55996?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Resource exhaustion in Suse Rancher

CVE-2026-55996

A denial-of-service vulnerability was identified in multiple TLS listeners in Rancher. Both the cattle-cluster-agent component running in downstream clusters and the Rancher server itself use the dynamiclistener library to serve TLS traffi…

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Suse Rancher — versions 2.11.0, 2.12.0, 2.13.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

meissner@suse.de
meissner@suse.de

Frequently asked questions

What is CVE-2026-55996?: CVE-2026-55996 is a medium-severity vulnerability in Suse Rancher, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2026-08-05.
How severe is CVE-2026-55996?: Medium severity. CVSS v3 base score is 4.3 out of 10.