CVE-2026-41050: CWE-863: Incorrect Authorization in SUSE Rancher
CVE-2026-41050 is a critical authorization vulnerability in SUSE Rancher's Fleet Helm deployer. The issue arises because ServiceAccount impersonation was not fully enforced in two code paths. This flaw allows a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on all downstream clusters targeted by their GitRepo. The vulnerability affects multiple Rancher versions from 0.11.0 through 0.15.0. It has a CVSS score of 9.9, indicating a critical severity level with high impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
CVE-2026-41050 is an incorrect authorization vulnerability (CWE-863) in SUSE Rancher's Fleet Helm deployer component. The vulnerability occurs because ServiceAccount impersonation is not fully applied in two code paths, enabling tenants with git push permissions on Fleet-monitored repositories to read secrets from any namespace across all downstream clusters targeted by their GitRepo. This flaw affects Rancher versions 0.11.0 through 0.15.0. The CVSS 3.1 base score is 9.9, reflecting network attack vector, low attack complexity, privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability. No official patch or remediation level is currently documented by SUSE, and no known exploits have been reported.
Potential Impact
An attacker with git push access to a Fleet-monitored repository can exploit this vulnerability to read sensitive secrets from any namespace on every downstream cluster targeted by their GitRepo. This compromises confidentiality and potentially integrity and availability of cluster resources. The vulnerability affects multiple Rancher versions and poses a critical risk due to the broad access to secrets across clusters.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict git push access to Fleet-monitored repositories to trusted users only. Monitor SUSE's advisories for updates regarding patches or official mitigations.
CVE-2026-41050: CWE-863: Incorrect Authorization in SUSE Rancher
Description
CVE-2026-41050 is a critical authorization vulnerability in SUSE Rancher's Fleet Helm deployer. The issue arises because ServiceAccount impersonation was not fully enforced in two code paths. This flaw allows a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on all downstream clusters targeted by their GitRepo. The vulnerability affects multiple Rancher versions from 0.11.0 through 0.15.0. It has a CVSS score of 9.9, indicating a critical severity level with high impact on confidentiality, integrity, and availability.
CVSS v3.1
Score 9.9critical
Affected software
pkg:github/rancher/rancherRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-41050 is an incorrect authorization vulnerability (CWE-863) in SUSE Rancher's Fleet Helm deployer component. The vulnerability occurs because ServiceAccount impersonation is not fully applied in two code paths, enabling tenants with git push permissions on Fleet-monitored repositories to read secrets from any namespace across all downstream clusters targeted by their GitRepo. This flaw affects Rancher versions 0.11.0 through 0.15.0. The CVSS 3.1 base score is 9.9, reflecting network attack vector, low attack complexity, privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability. No official patch or remediation level is currently documented by SUSE, and no known exploits have been reported.
Potential Impact
An attacker with git push access to a Fleet-monitored repository can exploit this vulnerability to read sensitive secrets from any namespace on every downstream cluster targeted by their GitRepo. This compromises confidentiality and potentially integrity and availability of cluster resources. The vulnerability affects multiple Rancher versions and poses a critical risk due to the broad access to secrets across clusters.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict git push access to Fleet-monitored repositories to trusted users only. Monitor SUSE's advisories for updates regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- suse
- Date Reserved
- 2026-04-16T13:37:50.679Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a043484cbff5d8610958728
Added to database: 05/13/2026, 08:21:24 UTC
Last enriched: 05/20/2026, 18:58:35 UTC
Last updated: 06/30/2026, 13:06:09 UTC
Views: 122
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