CVE-2026-88808: CWE-250 Execution with unnecessary privileges in SUSE Rancher
A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files. This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.
AI Analysis
Technical Summary
This vulnerability arises because the Fleet agent in SUSE Rancher Manager writes resources to downstream clusters using its own cluster-admin credentials rather than the ServiceAccount credentials pinned to the deployment. This improper privilege use violates the principle of least privilege and can lead to unauthorized overwriting of configuration files in multi-tenant environments where different tenants share downstream clusters. The affected versions are SUSE Rancher Fleet 0.14 prior to 0.14.11, 0.15 prior to 0.15.7, and 0.16 prior to 0.16.2.
Potential Impact
An attacker or tenant with access to the Fleet agent could leverage the cluster-admin privileges to overwrite configuration files on downstream clusters, potentially leading to full compromise of cluster configurations, data integrity loss, and denial of service. The vulnerability impacts confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
A fix is available in SUSE Rancher Fleet versions 0.14.11, 0.15.7, and 0.16.2. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation guidance is provided, so upgrading is the recommended action.
CVE-2026-88808: CWE-250 Execution with unnecessary privileges in SUSE Rancher
Description
A vulnerability has been identified within Rancher Manager where the Fleet agent wrote resources to downstream clusters using its own cluster-admin credentials instead of the ServiceAccount pinned to the deployment. It affects multi-tenancy environments where different tenants share the same downstream clusters, for example different privileged or untrusted teams inside the same organization. This could lead to overwritten configuration files. This issue affected SUSE Rancher Fleet 0.16 before 0.16.2, 0.15 before 0.15.7, and 0.14 before 0.14.11.
CVSS v3.1
Score 8.8high
Affected software
SUSE
Rancher
pkg:github/FleetRun 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
This vulnerability arises because the Fleet agent in SUSE Rancher Manager writes resources to downstream clusters using its own cluster-admin credentials rather than the ServiceAccount credentials pinned to the deployment. This improper privilege use violates the principle of least privilege and can lead to unauthorized overwriting of configuration files in multi-tenant environments where different tenants share downstream clusters. The affected versions are SUSE Rancher Fleet 0.14 prior to 0.14.11, 0.15 prior to 0.15.7, and 0.16 prior to 0.16.2.
Potential Impact
An attacker or tenant with access to the Fleet agent could leverage the cluster-admin privileges to overwrite configuration files on downstream clusters, potentially leading to full compromise of cluster configurations, data integrity loss, and denial of service. The vulnerability impacts confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
A fix is available in SUSE Rancher Fleet versions 0.14.11, 0.15.7, and 0.16.2. Users should upgrade to these or later versions to remediate the vulnerability. No additional mitigation guidance is provided, so upgrading is the recommended action.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- suse
- Date Reserved
- 2026-09-10T08:35:07.010Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abaabe3f7a7c54106053eb7
Added to database: 09/28/2026, 18:03:15 UTC
Last enriched: 09/28/2026, 18:17:41 UTC
Last updated: 09/29/2026, 01:57:22 UTC
Views: 11
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.