CVE-2026-88808 SUSE Rancher Fleet - Broken Access Control

SUSE Rancher Fleet < 0.16.2, 0.15 < 0.15.7, and 0.14 < 0.14.11 contain a broken access control caused by Fleet agent using cluster-admin credentials instead of pinned ServiceAccount, letting attackers overwrite configuration files in multi-tenant downstream clusters, exploit requires multi-tenant environment.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.28% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Data Tampering
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
28 September 2026
Updated
15 October 2026
Weakness
CWE-250

Vendor fix

Upgrade to versions 0.16.2, 0.15.7, 0.14.11 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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