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TI-2026-60216 Aliases CVE-2026-88808

Fleet agent copies downstream resources with cluster-admin privileges, allowing…

Priority MEDIUM 40CWE-250Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-250.

Summary

A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files. This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00278 20th percentileScored 2026-11-07
Fix Fixed Rancher (SUSE): 0.16.2, 0.15.7, 0.14.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SUSERancher0.16.0 to before 0.16.2; 0.15.0 to before 0.15.7; 0.14.0 to before 0.14.110.16.2, 0.15.7, 0.14.11Patch availableCNA
  • Rancher VendorSUSE Affected 0.16.0 to before 0.16.2; 0.15.0 to before 0.15.7; 0.14.0 to before 0.14.11 Fixed in 0.16.2, 0.15.7, 0.14.11 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*0.14.0 to before 0.14.11; 0.15.0 to before 0.15.7; 0.16.0 to before 0.16.2VulnerableSUSE
  • cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:* Versions 0.14.0 to before 0.14.11; 0.15.0 to before 0.15.7; 0.16.0 to before 0.16.2 Vulnerable ·SUSE

Remediation

  • Fix · CNA Rancher (SUSE) Fixed in 0.16.2, 0.15.7, 0.14.11

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-88808

References

Advisory 1

  • TI-2026-32801 Rancher Fleet vulnerable to cross namespace secret disclosure via unvalidated `valuesFrom` references in Helm Deployer CVSS 3.1CRITICAL 9.9
  • TI-2026-29689 Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering CVSS 3.1CRITICAL 9.9
  • TI-2026-32804 Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent CVSS 3.1HIGH 8.8
  • TI-2026-32803 SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Repository URL Components CVSS 4.0HIGH 8.3
  • TI-2026-63018 Authentication bypass by spoofing in SUSE Rancher CVSS 3.1HIGH 7.1
  • TI-2026-63017 Path traversal in Fleet Helm valuesFiles allows disclosure of files outside the bundle directory CVSS 3.1MEDIUM 6.5
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences