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CVE-2026-44935 is a critical authorization flaw in the Helm Deployer component of SUSE Rancher Fleet caused by missing validation of valuesFrom references. In affected versions, tenant-supplied Helm configuration can reference ConfigMaps or Secrets outside the intended namespace boundaries, and the Helm Deployer does not properly enforce validation of those references. In multi-tenant downstream Kubernetes clusters, this allows an owner of one tenant to bypass tenant isolation and access Fleet credentials and other sensitive configuration material belonging to other tenants. Reporting also indicates the flaw can be abused through Helm operations to create cluster-wide resources without proper administrative approval or intended service-account restrictions.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical cross-namespace secret disclosure vulnerability in SUSE Rancher Fleet Helm Deployer caused by missing validation of `valuesFrom` references, allowing one tenant to access another tenant's fleet credentials.
A critical cross-namespace secret disclosure and tenant-isolation bypass in Fleet's Helm deployer that allows malicious tenants to access config maps or secrets across namespaces and create cluster-wide resources.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.