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CVE-2026-44946— SAML Authentication Replay in Rancher

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是Rancher组织开源的一个开源容器管理平台,专为在生产环境中部署容器的组织而构建。 Rancher存在授权问题漏洞，该漏洞源于Assertion Consumer Service (ACS) handler未强制执行SAML断言的单次使用，可能导致中间人攻击。以下版本受到影响：2.14.3版本的2.14.0版本之前、2.13.7版本的2.13.0版本之前、2.12.11版本的2.12.0版本之前和2.11.15版本的2.11.0版本之前。

AI Predicted 8.1 Difficulty: Moderate EPSS 0.39% · P33

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 4

VendorProduct Version RangeStatus
SUSE Rancher 2.14.0< 2.14.3 affected
2.13.0< 2.13.7 affected
2.12.0< 2.12.11 affected
2.11.0< 2.11.15 affected
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I. Basic Information for CVE-2026-44946

Vulnerability Information
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Vulnerability Title
SAML Authentication Replay in Rancher
Source: CVE Program / CVE List V5
Vulnerability Description
A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service (ACS) handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用捕获-重放进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Rancher 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rancher是Rancher组织开源的一个开源容器管理平台,专为在生产环境中部署容器的组织而构建。 Rancher存在授权问题漏洞，该漏洞源于Assertion Consumer Service (ACS) handler未强制执行SAML断言的单次使用，可能导致中间人攻击。以下版本受到影响：2.14.3版本的2.14.0版本之前、2.13.7版本的2.13.0版本之前、2.12.11版本的2.12.0版本之前和2.11.15版本的2.11.0版本之前。
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 2.14.0 ~ 2.14.3 -

II. Public POCs for CVE-2026-44946

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III. Intelligence Information for CVE-2026-44946

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Vendor Advisories for CVE-2026-44946 (1)

Same Patch Batch · SUSE · 2026-06-30 · 5 CVEs total

CVE-2026-41053 8.8 HIGH Over-inclusive team membership expansion in GitHub App authentication provider for Rancher
CVE-2026-44947 Stale PSA ClusterRoleBinding Persists After RoleTemplate Downgrade in Rancher
CVE-2026-44949 Unauthenticated namespace creation and RBAC injection via rancher-webhook FleetWorkspace m
CVE-2026-44948 Path Traversal in Rancher Fleet ImageScan GitRepo Path Handler

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-294