OCTOBER 7, 2026
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Case File

CVE-2026-93538

HIGH · CVSS 7.1 EPSS 0.17% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-28 · Last synced 2026-10-07

CyberRota Analysis

AI-Generated

SUSE Rancher Fleet is vulnerable to a cross-tenant authorization issue that allows an attacker to manipulate cluster labels during agent-initiated cluster registration, potentially causing their cluster to meet targeting rules intended for another cluster. This could lead to unauthorized access or control over resources within a shared workspace namespace. Organizations using affected versions of SUSE Rancher Fleet should prioritize applying the necessary updates to mitigate this high-severity vulnerability.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-93538
Severity
HIGH
CVSS
7.1
EPSS
0.17%

Original NVD Description

A cross-tenant authorization issue was discovered in SUSE Rancher Fleet. During agent-initiated cluster registration, cluster labels supplied by the registering agent, including labels in the reserved management.cattle.io/ namespace such as the cluster display name label, were applied to the resulting upstream Cluster object. Because Fleet resolves GitRepo and Bundle targets from those cluster labels, a party able to register a cluster into a Fleet workspace namespace shared with other tenants could cause its own cluster to satisfy targeting rules that administrators intended for a different cluster. This affects SUSE Rancher Fleet 0.16 before 0.16.1, 0.15 before 0.15.6, 0.14 before 0.14.10, 0.13 before 0.13.15, 0.12 before 0.12.19 and older versions.

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