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CVE-2026-44936— Rancher Fleet SSRF in Bundle Reader via Unvalidated Helm Repository URL in fleet.yaml

Quick assessment

Affected
SUSE Rancher
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.

Rancher Fleet是Rancher公司的一款容器集群监控与管理平台。 Rancher Fleet存在服务端请求伪造漏洞，该漏洞源于当GitRepo资源未设置helmRepoURLRegex字段时，缺少过滤机制，导致Helm身份验证凭据（BasicAuth）被转发到fleet.yaml文件中helm.repo字段指定的任意URL，可能允许攻击者推送到fleet监控的git仓库并泄露helm访问凭据。以下版本受到影响：0.12.15版本之前的0.12.x版本、0.13.11版本之前的0.13.x版本、

CVSS 5.0 · Medium EPSS 0.35% · P26

Affected Version Matrix 4

VendorProduct Version RangeStatus
SUSE Rancher 0.15.0< 0.15.2 affected
0.14.0< 0.14.6 affected
0.13.0< 0.13.11 affected
0.12.0< 0.12.15 affected
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I. Basic Information for CVE-2026-44936

Vulnerability Information
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Vulnerability Title
Rancher Fleet SSRF in Bundle Reader via Unvalidated Helm Repository URL in fleet.yaml
Source: CVE Program / CVE List V5
Vulnerability Description
Missing filtering when the helmRepoURLRegex field isn't set on a GitRepo resource in SUSE Rancher Fleet's bundle reader in 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file, allowing attackers able to push to fleet monitored git repos to leak helm access credentials.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A: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
Rancher Fleet 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rancher Fleet是Rancher公司的一款容器集群监控与管理平台。 Rancher Fleet存在服务端请求伪造漏洞，该漏洞源于当GitRepo资源未设置helmRepoURLRegex字段时，缺少过滤机制，导致Helm身份验证凭据（BasicAuth）被转发到fleet.yaml文件中helm.repo字段指定的任意URL，可能允许攻击者推送到fleet监控的git仓库并泄露helm访问凭据。以下版本受到影响：0.12.15版本之前的0.12.x版本、0.13.11版本之前的0.13.x版本、
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 Rancher 0.15.0 ~ 0.15.2 -

II. Public POCs for CVE-2026-44936

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III. Intelligence Information for CVE-2026-44936

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Vendor Advisories for CVE-2026-44936 (1)

Same Patch Batch · SUSE · 2026-07-06 · 3 CVEs total

CVE-2026-44934 Exposed tokens in SUSE Rancher AI Agent logs
CVE-2026-44937 SUSE Rancher Fleet had an Unauthenticated Webhook: Regex Injection via Unsanitized Reposit

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-44936

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