Unauthenticated update of public UI settings leading to stored cross-site scripting in Rancher

Why this deserves its current priority

CVSS is 9.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Affected scope and exposure questions

The current feed maps SUSE/Rancher (generic). Check affected ranges and fixed versions before updating.

Recommended response

1. 1Check inventory. Check lockfiles and deployed manifests for SUSE/Rancher.
2. 2Review the reported fix. Update SUSE/Rancher to 2.15.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

1. Published upstream

   Sep 28, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

2. Source modified

   Sep 28, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

3. First seen by HOL

   Sep 28, 2026

Sources and claim methodology

• GitHub security advisorygithub.com

Related CVEs

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• Fleet agent copies downstream resources with cluster-admin privileges, allowing cross-namespace writes on downstream clustersSame suse/rancher package
• Path traversal in Fleet Helm valuesFiles allows disclosure of files outside the bundle directorySame suse/rancher package
• Cross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in FleetSame suse/rancher package
• Unauthenticated GitRepo Spec Mutation via Fleet Git Webhook ReceiverSame suse/rancher package
• Fleet applies namespace labels and annotations without the bundle's service account privilegesSame suse/rancher package