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CVE-2026-75036— Fleet: DNS exfiltration via Sprig getHostByName in fleet.yaml Helm template preprocessing

Quick assessment

Affected
SUSE Fleet
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SUSE Fleet是德国SUSE公司的一款管理Kubernetes集群的持续交付工具。 SUSE Fleet 0.12.0至0.12.19之前版本、0.13.0至0.13.15之前版本、0.14.0至0.14.10之前版本、0.15.0至0.15.6之前版本和0.16.0至0.16.1之前版本存在安全漏洞，该漏洞源于Helm模板预处理问题，可能导致泄露集群元数据和可达主机信息。

CVSS 5.3 · Medium EPSS 0.16% · P5

Affected Version Matrix 5

VendorProduct Version RangeStatus
SUSE Fleet 0.12.0< 0.12.19 affected
0.13.0< 0.13.15 affected
0.14.0< 0.14.10 affected
0.15.0< 0.15.6 affected
0.16.0< 0.16.1 affected
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I. Basic Information for CVE-2026-75036

Vulnerability Information
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Vulnerability Title
Fleet: DNS exfiltration via Sprig getHostByName in fleet.yaml Helm template preprocessing
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability was discovered in Fleet's Helm template preprocessing where templates evaluated by the Fleet controller could reach network resources outside the management cluster. A user who can supply bundle content to a repository referenced by a `GitRepo` resource can cause the Fleet controller to: - Disclose cluster metadata available to the templating context. - Reveal information about hosts reachable from the controller's network position. Because the disclosure channel is name resolution, it may remain effective in environments where outbound traffic is otherwise restricted. The disclosed information is limited to values exposed to the Fleet templating context and to name resolution results. Integrity and availability of managed clusters are not affected. This issue affects Fleet: from 0.12.0 before 0.12.19, from 0.13.0 before 0.13.15, from 0.14.0 before 0.14.10, from 0.15.0 before 0.15.6, and from 0.16.0 before 0.16.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
SUSE Fleet 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SUSE Fleet是德国SUSE公司的一款管理Kubernetes集群的持续交付工具。 SUSE Fleet 0.12.0至0.12.19之前版本、0.13.0至0.13.15之前版本、0.14.0至0.14.10之前版本、0.15.0至0.15.6之前版本和0.16.0至0.16.1之前版本存在安全漏洞，该漏洞源于Helm模板预处理问题，可能导致泄露集群元数据和可达主机信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE Fleet 0.12.0 ~ 0.12.19 -

II. Public POCs for CVE-2026-75036

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III. Intelligence Information for CVE-2026-75036

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Vendor Advisories for CVE-2026-75036 (1)

Same Patch Batch · SUSE · 2026-09-03 · 6 CVEs total

CVE-2026-71404 8.7 HIGH Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation o
CVE-2026-75033 7.7 HIGH Rancher: Cross-Cluster Secret Leakage via Namespace projectId Annotation Spoofing
CVE-2026-75035 7.7 HIGH Rancher: ext.cattle.io/v1 Token store: cross-user token disclosure via label-selector scop
CVE-2026-75034 7.4 HIGH Rancher: SAML Assertion Replay
CVE-2026-71403 6.1 MEDIUM Rancher: Identity-field mutation in /v3/users allows account hijack via principal rebind

IV. Related Vulnerabilities

Same product: Fleet
Same vendor: SUSE
Same weakness: CWE-918