What is CVE-2026-88811?

CVE-2026-88811 is a critical-severity vulnerability in SUSE Rancher, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 9.1/10. Published 2026-11-02.

How severe is CVE-2026-88811?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in SUSE Rancher

CVE-2026-88811

Missing filtering in the SUSE Rancher Manager meta proxy could cause passed in rancher credentials to be leaked to cloud providers. This affects SUSE Rancher 2.15.0 up to 2.15.3, 2.14.0 up to 2.14.7, 2.13.0 up to 2.13.11,

Published 2026-11-02 · last modified 2026-11-03.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

SUSE Rancher

Weakness classification (CWE)

CWE-201 — Insertion of Sensitive Information into Sent Data

References

github.com/rancher/rancher/security/advisories/GHSA-x82x-2qj6-5rm2 (vendor-advisory)

Frequently asked questions

What is CVE-2026-88811?: CVE-2026-88811 is a critical-severity vulnerability in SUSE Rancher, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 9.1/10. Published 2026-11-02.
How severe is CVE-2026-88811?: Critical severity. CVSS v3 base score is 9.1 out of 10.