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PatchSiren cyber security CVE debrief

CVE-2026-44936 SUSE CVE debrief

CVE-2026-44936 is a vulnerability in SUSE Rancher Fleet's bundle reader. When the helmRepoURLRegex field isn't set on a GitRepo resource, it forwards Helm authentication credentials to any URL specified in the helm.repo field of a fleet.yaml file. This allows attackers able to push to fleet monitored git repos to leak Helm access credentials. The vulnerability has a CVSS score of 5 and is classified as MEDIUM severity. Users of SUSE Rancher Fleet should review and update their deployments to prevent potential credential leakage.

Vendor
SUSE
Product
Rancher
CVSS
MEDIUM 5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-06
Original CVE updated
2026-07-09
Advisory published
2026-07-06
Advisory updated
2026-07-09

Who should care

Users of SUSE Rancher Fleet versions 0.12 before 0.12.15, 0.13 before 0.13.11, 0.14 before 0.14.6, and 0.15 before 0.15.2 should be aware of this vulnerability and take recommended actions to prevent potential credential leakage. This includes updating to the latest version, restricting access to fleet monitored git repositories, and monitoring for suspicious activity.

Technical summary

The vulnerability exists in SUSE Rancher Fleet's bundle reader. When the helmRepoURLRegex field is not set on a GitRepo resource, it fails to filter and forwards Helm authentication credentials (BasicAuth) to any URL specified in the helm.repo field of a fleet.yaml file. This issue allows attackers with the ability to push to fleet monitored git repositories to leak Helm access credentials. The vulnerability has a CVSS score of 5, indicating a moderate severity level.

Defensive priority

Medium priority due to the CVSS score of 5 and the potential for credential leakage. Users should take immediate action to update their deployments and implement compensating controls to protect Helm access credentials. This includes reviewing and updating fleet.yaml files, restricting access to fleet monitored git repositories, and monitoring for suspicious activity on fleet.yaml files and Helm access credentials. Implementing compensating controls such as multi-factor authentication and role-based access control can also help to mitigate the vulnerability. Additionally, users should track exceptions, retest remediated assets, and close the item only after evidence is documented. Regularly reviewing and updating the deployment can help to prevent similar vulnerabilities in the future. It is also recommended to review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Check relevant monitoring, detection, and logs for exposed assets that need extra review. This vulnerability highlights the importance of secure configuration and monitoring of fleet monitored git repositories and Helm access credentials. Users should prioritize the security of their deployments and take proactive measures to prevent potential credential leakage. By taking these steps, users can help to protect their deployments from potential attacks and maintain the security of their Helm access credentials. The CVE record and NVD entry provide additional information and context for users to review and understand the vulnerability. Users should review this information and take appropriate action to protect their deployments. The vulnerability is a reminder of the importance of secure configuration and monitoring of fleet monitored git repositories and Helm access credentials. Users should prioritize the security of their deployments and take proactive measures to prevent potential credential leakage. The recommended actions provided,

Recommended defensive actions

  • Update SUSE Rancher Fleet to version 0.12.15, 0.13.11, 0.14.6, or 0.15.2, or later
  • Restrict access to fleet monitored git repositories
  • Monitor for suspicious activity on fleet.yaml files
  • Implement compensating controls to protect Helm access credentials
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE record was published on 2026-07-06T11:16:27.610Z and was last modified on 2026-07-09T20:34:30.743Z. The NVD entry is currently Analyzed. There is limited information available about the vulnerability from the source item. Further verification is needed to determine the full scope of the vulnerability and potential impacts.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-06T11:16:27.610Z and has not been modified since then. The NVD entry is currently Analyzed.