{"id":"GHSA-xr65-5cpm-g36x","revision":null,"records":[{"revision":"5ded3fd84e594894a4b572cf51eb46cf","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-44935","aliases":[],"title":"Rancher Fleet vulnerable to cross namespace secret disclosure via unvalidated `valuesFrom` references in Helm Deployer","description":"Missing validation of \"valuesFrom\" references in Helm Deployer of SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 could be used by owners of one tenant to access fleet credentials of other tenants.","state":0,"publishedAt":"2026-07-02T16:00:06.751+00:00","modifiedAt":"2026-07-03T03:56:15.397+00:00","affected":[{"ecosystem":"Vendor product","name":"Fleett","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"SUSE\",\n                    \"product\": \"Rancher\",\n                    \"packageName\": \"Fleett\",\n                    \"repo\": \"https://github.com/rancher/fleet/\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.15.0\",\n                            \"lessThan\": \"0.15.2\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.14.0\",\n                            \"lessThan\": \"0.14.6\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.13.0\",\n                            \"lessThan\": \"0.13.11\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.12.0\",\n                            \"lessThan\": \"0.12.15\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":"CRITICAL"}],"references":["https://github.com/rancher/fleet/security/advisories/GHSA-xr65-5cpm-g36x"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-44935","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-44935","identifiers":["CVE-2026-44935"]},"retained":false,"historicalAffected":[]},{"revision":"96801a36986a44b5a454e667fb2eda75","observedAt":"2026-11-07T10:32:40.055+00:00","statement":{"source":"euvd","id":"EUVD-2026-41408","aliases":["CVE-2026-44935","GHSA-xr65-5cpm-g36x"],"title":"Missing validation of \"valuesFrom\" references in Helm Deployer of SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 could be used by owners of one tenant to access fleet credentials of ot…","description":"Missing validation of \"valuesFrom\" references in Helm Deployer of SUSE Rancher Fleet 0.15 before 0.15.2, 0.14 before 0.14.6, 0.13 before 0.13.11 and 0.12 before 0.12.15 could be used by owners of one tenant to access fleet credentials of other tenants.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":null}],"references":["https://github.com/rancher/fleet/security/advisories/GHSA-xr65-5cpm-g36x"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-41408","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jul 2, 2026, 4:00:06 PM","dateUpdated":"Jul 3, 2026, 3:56:15 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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They can create cluster-wide resources using `HelmOp` or `Bundle` without authorization.\nSpecifically, an attacker can exploit this vulnerability in the following ways:\n1. Use `valuesFrom` in `fleet.yaml`(through a `GitRepo` resource) or a `HelmOp resource to read the contents of any secret an on the downstream cluster, provided they know or can guess the name, namespace, and key.\n2. Deploy `HelmOp` and `Bundle` resources without being restricted to a specific service account for the Fleet agent.\n\nIf you use Fleet in a multi-tenant environment, it's recommended that you:\n- Review your cluster and Fleet deployments logs for indicators of unauthorized access across tenant namespaces.\n- Rotate any service accounts and credentials that might have been exposed.\n\nPlease consult the associated  [MITRE ATT&CK - Technique - Unsecured Credentials](https://attack.mitre.org/techniques/T1552/) for further information about this category of attack.\n\n### Patches\nTo resolve this vulnerability, upgrade to a patched version of Fleet.  The new Policy resource allows you to:\n- Configure `GitRepos`, `HelmOps`, and `Bundles` to require a specific service account for the Fleet agent on downstream clusters used for deployment. The agent uses these designated service accounts for operations, blocking access to unauthorized resources.\n- Restrict `HelmOp` repository and chart URLs by using a regular expression. The regular expression is automatically anchored with `^` and `$`, meaning it must match the entire URL string.\n\nLike `GitRepoRestriction`, a Policy resource must be created in the specific namespace you want to restrict, and it only applies to that namespace.\n\n**Note:** Before applying a policy, ensure that the required service account is available on the downstream clusters and is configured with least-privilege permissions.\n\nPatched versions of Fleet include releases `v0.15.2`, `v0.14.6`, `0.13.11`, and `v0.12.15`.\n\n### Workarounds\nIf you can't upgrade to a fixed version, please make sure that tenants do not have shared access to the same downstream clusters.\n\n### Credits\n\nThis security issue was reported by the following collaborators according to our responsible disclosure policy:\n\n- Radisauskas Arnoldas from NATO and the NATO Cyber Security Centre (NCSC).\n\n### References\nIf you have any questions or comments about this advisory:\n- Reach out to the [SUSE Rancher Security team](https://github.com/rancher/rancher/security/policy) for security related inquiries.\n- Open an issue in the [Rancher](https://github.com/rancher/rancher/issues/new/choose) repository.\n- Verify with our [support matrix](https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/) and [product support lifecycle](https://www.suse.com/lifecycle/).","state":0,"publishedAt":"2026-07-01T20:45:39+00:00","modifiedAt":"2026-07-07T16:11:07.0641247+00:00","affected":[{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.15.0"},{"kind":"fixed","version":"0.15.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.14.0"},{"kind":"fixed","version":"0.14.6"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.13.0"},{"kind":"fixed","version":"0.13.11"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.12.0"},{"kind":"fixed","version":"0.12.15"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/rancher/fleet/security/advisories/GHSA-xr65-5cpm-g36x","https://github.com/rancher/fleet"],"sourceUrl":"https://github.com/advisories/GHSA-xr65-5cpm-g36x","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-xr65-5cpm-g36x","identifiers":["GHSA-xr65-5cpm-g36x","CVE-2026-44935","GO-2026-5877"]},"retained":false,"historicalAffected":[]},{"revision":"14a913ada8104b258bd261552660ad1c","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5877","aliases":["CVE-2026-44935","GHSA-xr65-5cpm-g36x"],"title":"Rancher Fleet vulnerable to cross namespace secret disclosure via unvalidated `valuesFrom` references in Helm Deployer in github.com/rancher/fleet","description":"Rancher Fleet vulnerable to cross namespace secret disclosure via unvalidated `valuesFrom` references in Helm Deployer in github.com/rancher/fleet","state":0,"publishedAt":"2026-07-07T15:26:37+00:00","modifiedAt":"2026-07-07T16:01:31.2343908+00:00","affected":[{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.12.0"},{"kind":"fixed","version":"0.12.15"},{"kind":"introduced","version":"0.13.0"},{"kind":"fixed","version":"0.13.11"},{"kind":"introduced","version":"0.14.0"},{"kind":"fixed","version":"0.14.6"},{"kind":"introduced","version":"0.15.0"},{"kind":"fixed","version":"0.15.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/rancher/fleet/security/advisories/GHSA-xr65-5cpm-g36x"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5877","license":"OSV · upstream source license applies","key":"osv:GO-2026-5877","identifiers":["GO-2026-5877","CVE-2026-44935","GHSA-xr65-5cpm-g36x"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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