{"id":"GO-2026-5207","revision":null,"records":[{"revision":"f197529676f04a6f917cbbfb7cc75ad5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-41050","aliases":[],"title":"Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering","description":"Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their `GitRepo`.","state":0,"publishedAt":"2026-05-13T08:04:57.293+00:00","modifiedAt":"2026-05-14T03:55:58.136+00:00","affected":[{"ecosystem":"Vendor product","name":"github.com/rancher/fleet","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"SUSE\",\n                    \"product\": \"Rancher\",\n                    \"packageName\": \"github.com/rancher/fleet\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.15.0\",\n                            \"lessThan\": \"0.15.1\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.14.0\",\n                            \"lessThan\": \"0.14.5\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.13.0\",\n                            \"lessThan\": \"0.13.10\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.12.0\",\n                            \"lessThan\": \"0.12.14\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0.11.0\",\n                            \"lessThan\": \"0.11.13\",\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://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41050","https://github.com/advisories/GHSA-765j-qfrp-hm3j"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-41050","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-41050","identifiers":["CVE-2026-41050"]},"retained":false,"historicalAffected":[]},{"revision":"147212865ea84b85915fc3bf685737b9","observedAt":"2026-10-28T05:06:31.888+00:00","statement":{"source":"euvd","id":"EUVD-2026-29917","aliases":["CVE-2026-41050","GHSA-765j-qfrp-hm3j"],"title":"Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by thei…","description":"Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their `GitRepo`.","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://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41050","https://github.com/advisories/GHSA-765j-qfrp-hm3j"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29917","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 13, 2026, 8:04:57 AM","dateUpdated":"May 14, 2026, 3:55:58 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-29917","identifiers":["EUVD-2026-29917","CVE-2026-41050","GHSA-765j-qfrp-hm3j"]},"retained":false,"historicalAffected":[]},{"revision":"c6c5612993a145aa977e435e0de52ecd","observedAt":"2026-10-27T10:10:07.342+00:00","statement":{"source":"nvd","id":"CVE-2026-41050","aliases":[],"title":"Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by thei…","description":"Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their `GitRepo`.","state":0,"publishedAt":"2026-05-13T08:16:16.78+00:00","modifiedAt":"2026-10-26T14:10:00.13+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · meissner@suse.de · Secondary","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://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41050","https://github.com/advisories/GHSA-765j-qfrp-hm3j"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41050","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-863"],"productCriteria":["cpe:2.3:a:suse:rancher_fleet:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-05-13T08:16:16.780","lastModified":"2026-10-26T14:10:00.130"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-41050","identifiers":["CVE-2026-41050"]},"retained":false,"historicalAffected":[]},{"revision":"7a7faada60cf45069754c67c07ddf772","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-765j-qfrp-hm3j","aliases":["CVE-2026-41050","GO-2026-5207"],"title":"Fleet: Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering","description":"### Impact\n\nFleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their `GitRepo`.\n\n**Helm `lookup` bypass:** The Helm template engine ran Kubernetes API queries with the fleet-agent's cluster-admin credentials instead of the impersonated ServiceAccount. A chart template could therefore access resources beyond the tenant's RBAC scope.\n\n**`valuesFrom` bypass:** Secret and ConfigMap references in `fleet.yaml` `helm.valuesFrom` were read using the fleet-agent's cluster-admin client. A tenant could reference resources in namespaces the impersonated ServiceAccount has no access to.\nBoth issues break Fleet's multi-tenant impersonation boundary. The leaked credentials may belong to external services, making the full impact non-deterministic.\nSingle-tenant deployments where all users are trusted are not affected.\n\n**Important:**\n- For the exposure of additional credentials, the final impact severity for confidentiality, integrity and availability is dependent on the permissions the leaked credentials have on their services.\n- It is recommended to review for potentially leaked credentials in this scenario and to change them if deemed necessary.\n\nPlease consult the associated  [MITRE ATT&CK - Technique - Account Access Removal](https://attack.mitre.org/techniques/T1531/) for further information about this category of attack.\n\n### Patches\n\nBoth issues are fixed by ensuring the Helm action configuration consistently uses the impersonated ServiceAccount credentials throughout all Helm operations.\n\nPatched versions of Rancher include releases `v2.14.1`, `v2.13.5`, `v2.12.9`, and `v2.11.13`. For Rancher `v2.10.11`, users must manually update their Fleet deployment to version`v0.11.13`.\n\n### Workarounds\n\nNo workaround fully mitigates the issue for multi-tenant deployments. The patches should be applied as soon as they are available.\n\nThe following measures reduce the attack surface but do not close either vulnerability:\n\n- Restrict git push access to Fleet-monitored repositories to trusted users only. In a multi-tenant setup this removes the precondition entirely, but is often not operationally viable.\n- Use `GitRepoRestriction` resources to limit which ServiceAccounts each namespace is allowed to use, restricting the set of users who can configure impersonation at all.\n- Audit deployed chart templates for `lookup` calls and `fleet.yaml` files for cross-namespace `valuesFrom` references as a detective control.\n\n### Resources\n\nIf there are any questions or comments about this advisory:\n\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 using the [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":"2026-05-07T01:26:06+00:00","modifiedAt":"2026-06-25T19:56:22.698372+00:00","affected":[{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.15.0"},{"kind":"fixed","version":"0.15.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.14.0"},{"kind":"fixed","version":"0.14.5"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.13.0"},{"kind":"fixed","version":"0.13.10"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.12.0"},{"kind":"fixed","version":"0.12.14"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.11.0"},{"kind":"fixed","version":"0.11.13"}]}],"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-765j-qfrp-hm3j","https://nvd.nist.gov/vuln/detail/CVE-2026-41050","https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41050","https://github.com/rancher/fleet"],"sourceUrl":"https://github.com/advisories/GHSA-765j-qfrp-hm3j","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-765j-qfrp-hm3j","identifiers":["GHSA-765j-qfrp-hm3j","CVE-2026-41050","GO-2026-5207"]},"retained":false,"historicalAffected":[]},{"revision":"9fec513938964a819618c521016e750e","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5207","aliases":["CVE-2026-41050","GHSA-765j-qfrp-hm3j"],"title":"Fleet: Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering in github.com/rancher/fleet","description":"Fleet: Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering in github.com/rancher/fleet","state":0,"publishedAt":"2026-06-25T18:43:15+00:00","modifiedAt":"2026-06-25T19:45:15.3323089+00:00","affected":[{"ecosystem":"Go","name":"github.com/rancher/fleet","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.11.0"},{"kind":"fixed","version":"0.11.13"},{"kind":"introduced","version":"0.12.0"},{"kind":"fixed","version":"0.12.14"},{"kind":"introduced","version":"0.13.0"},{"kind":"fixed","version":"0.13.10"},{"kind":"introduced","version":"0.14.0"},{"kind":"fixed","version":"0.14.5"},{"kind":"introduced","version":"0.15.0"},{"kind":"fixed","version":"0.15.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/rancher/fleet/security/advisories/GHSA-765j-qfrp-hm3j","https://nvd.nist.gov/vuln/detail/CVE-2026-41050","https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-41050"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5207","license":"OSV · upstream source license applies","key":"osv:GO-2026-5207","identifiers":["GO-2026-5207","CVE-2026-41050","GHSA-765j-qfrp-hm3j"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-28T10:33:32.5344446+00:00","complete":true,"records":1760,"lastAttemptAt":"2026-10-28T10:33:32.5344446+00:00","lastSuccessAt":"2026-10-28T10:33:32.6834837+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:33:32.6834858+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-d2186f400c54d65f61687f78bb1a00d184d2e215877d0194d7ed70caee809a44-dbe935b5c0445aa8bf0ad6eee2fdccbed1511848550405783cb6764f13f2cea1","complete":true,"records":415637,"lastAttemptAt":"2026-10-28T10:33:28.1218743+00:00","lastSuccessAt":"2026-10-28T10:33:28.0918568+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:33:28.1218743+00:00","snapshotPublishedAt":"2026-10-28T10:28:43+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-3e2d32456d9744919d8e7685c829fe88","complete":false,"records":13207,"lastAttemptAt":"2026-10-28T10:34:28.7143572+00:00","lastSuccessAt":"2026-10-28T10:34:28.7694714+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:34:28.7694714+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-10-28T10:33:32.5344446+00:00","complete":true,"records":1093,"lastAttemptAt":"2026-10-28T10:33:32.5344446+00:00","lastSuccessAt":"2026-10-28T10:33:32.6846081+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:33:32.6846084+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-8d16a738328646698f9217d8ea11893c","complete":true,"records":13449,"lastAttemptAt":"2026-10-28T10:33:33.1463542+00:00","lastSuccessAt":"2026-10-27T22:48:29.491+00:00","error":null,"lastVerifiedAt":"2026-10-27T22:48:29.491+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13514,"expectedIdentifiers":13514,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-f7cb12508d9e6a348c8a60f772ed85529cc80cd2ff853da1099b57754b20e943","complete":true,"records":9790,"lastAttemptAt":"2026-10-28T10:33:28.4933633+00:00","lastSuccessAt":"2026-10-27T21:49:03.9756799+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:33:28.4933633+00:00","snapshotPublishedAt":"2026-10-27T21:48:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-72e5e79de0026dd0562d40734074a2236a06886643d67182b8381eaee757dbf7","complete":true,"records":1966,"lastAttemptAt":"2026-10-28T10:33:28.2877501+00:00","lastSuccessAt":"2026-10-27T21:46:38.0277323+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:33:28.2877501+00:00","snapshotPublishedAt":"2026-10-27T21:18:15+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-9cc0e41ed4e75d0c111bed7fd0bbcd4f139c80cc1fc67f8c3d9a33a41da846ad","complete":true,"records":3002,"lastAttemptAt":"2026-10-28T10:33:32.5040876+00:00","lastSuccessAt":"2026-10-28T10:33:32.3653779+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:33:32.5040876+00:00","snapshotPublishedAt":"2026-10-28T09:02:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-2ba4ef78ff3a54a3ff2eeaf8e09b7b84901727f582723b80c5b0279e777b2781","complete":true,"records":230857,"lastAttemptAt":"2026-10-28T10:33:28.3916004+00:00","lastSuccessAt":"2026-10-28T09:35:14.9469514+00:00","error":null,"lastVerifiedAt":"2026-10-28T10:33:28.3916004+00:00","snapshotPublishedAt":"2026-10-28T09:33:01+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}