CVE-2026-93538

highpriority · track · 0EPSS 0.002 · 6 %ileDEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.17% (6th) EPSS

CVSS 7.1 · high

Is it mine?

10 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-22

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.1

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:Nsecondary · meissner@suse.deexploitability 2.8 · impact 4.2

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-290USCWE-639US

affected products (10)

Products and version ranges known to be affected.

Open Source Fleet< 0.12.19cert_bundDE
Open Source Fleet< 0.13.15cert_bundDE
Open Source Fleet< 0.14.10cert_bundDE
Open Source Fleet< 0.15.6cert_bundDE
Open Source Fleet< 0.16.1cert_bundDE
suse rancher fleet0.12.0 → 0.12.19nvdUScpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*
suse rancher fleet0.13.0 → 0.13.15nvdUScpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*
suse rancher fleet0.14.0 → 0.14.10nvdUScpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*
suse rancher fleet0.15.0 → 0.15.6nvdUScpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*
suse rancher fleet0.16.0 → 0.16.1nvdUScpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3546Fleet: Mehrere SchwachstellenDeutsch2026-09-23csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Fleet ausnutzen, um erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen und einen Denial-of-Service-Zustand auszulösen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-09-28modified 2026-10-07

references (1) nvd

External citations — patches, advisories, analysis.

https://github.com/rancher/fleet/security/advisories/GHSA-h9p5-fp5h-qpqrVendor Advisory

scry

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