{"id":"CVE-2026-47680","revision":null,"records":[{"revision":"9416868953fb4663b31ca3ec2003edc7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47680","aliases":[],"title":"Source controller: Improper path handling allows traversal","description":"The source-controller is a Kubernetes operator, specialised in artifacts acquisition from external sources such as Git, OCI, Helm repositories and S3-compatible buckets. In versions 0.0.17 through 1.8.4, an actor with the ability to influence the contents of a bucket referenced by a `Bucket` resource can cause source-controller to write fetched object data to paths outside the per-reconciliation working directory. The corruption surface is bounded by source-controller's own and downstream Flux controllers' digest verification: source-controller verifies stored artifact digests during reconciliation and rebuilds on divergence; consumers (kustomize-controller, helm-controller) verify the digest of fetched artifacts and reject mismatches. These checks prevent a manipulated artifact from reaching the cluster, but an attacker can still write files anywhere the source-controller pod has permission to write. Separately, a user with permission to create or update `GitRepository` resources can cause source-controller to test for the existence of paths outside the cloned repository. Because the result is exposed via the resource's status, this allows limited enumeration of file paths on the controller pod. This surface exists only on source-controller v1.6.0 and later, where the sparse-checkout feature was introduced. This vulnerability was fixed in source-controller v1.8.5. There is no in-product workaround. Users should upgrade to a patched version. As a defense-in-depth measure for the GitRepository sparse-checkout surface, a `ValidatingAdmissionPolicy` (or a third-party policy engine such as Kyverno or OPA Gatekeeper) can be deployed to reject `GitRepository` resources whose `.spec.sparseCheckout` entries contain `..` or absolute path segments.","state":0,"publishedAt":"2026-09-08T23:04:50.413+00:00","modifiedAt":"2026-09-09T13:03:01.568+00:00","affected":[{"ecosystem":"Vendor product","name":"source-controller","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"fluxcd\",\n                    \"product\": \"source-controller\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 0.0.17, < 1.8.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/fluxcd/source-controller/security/advisories/GHSA-jjrm-hr5f-673x","https://github.com/fluxcd/source-controller/pull/2054","https://github.com/fluxcd/source-controller/commit/759bd6c451e7cc4327b38f42c8b671980165cb0e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47680","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47680","identifiers":["CVE-2026-47680"]},"retained":false,"historicalAffected":[]},{"revision":"0815f5fd9a0747cc826fe397fc99f739","observedAt":"2026-11-11T13:00:38.33+00:00","statement":{"source":"euvd","id":"EUVD-2026-74295","aliases":["CVE-2026-47680","GHSA-jjrm-hr5f-673x"],"title":"The source-controller is a Kubernetes operator, specialised in artifacts acquisition from external sources such as Git, OCI, Helm repositories and S3-compatible buckets. 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These checks prevent a manipulated artifact from reaching the cluster, but an attacker can still write files anywhere the source-controller pod has permission to write. Separately, a user with permission to create or update `GitRepository` resources can cause source-controller to test for the existence of paths outside the cloned repository. Because the result is exposed via the resource's status, this allows limited enumeration of file paths on the controller pod. This surface exists only on source-controller v1.6.0 and later, where the sparse-checkout feature was introduced. This vulnerability was fixed in source-controller v1.8.5. There is no in-product workaround. Users should upgrade to a patched version. As a defense-in-depth measure for the GitRepository sparse-checkout surface, a `ValidatingAdmissionPolicy` (or a third-party policy engine such as Kyverno or OPA Gatekeeper) can be deployed to reject `GitRepository` resources whose `.spec.sparseCheckout` entries contain `..` or absolute path segments.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":5.3,"severity":null}],"references":["https://github.com/fluxcd/source-controller/security/advisories/GHSA-jjrm-hr5f-673x","https://github.com/fluxcd/source-controller/pull/2054","https://github.com/fluxcd/source-controller/commit/759bd6c451e7cc4327b38f42c8b671980165cb0e"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-74295","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 8, 2026, 11:04:50 PM","dateUpdated":"Sep 9, 2026, 1:03:01 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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In versions 0.0.17 through 1.8.4, an actor with the ability to influence the contents of a bucket referenced by a `Bucket` resource can cause source-controller to write fetched object data to paths outside the per-reconciliation working directory. The corruption surface is bounded by source-controller's own and downstream Flux controllers' digest verification: source-controller verifies stored artifact digests during reconciliation and rebuilds on divergence; consumers (kustomize-controller, helm-controller) verify the digest of fetched artifacts and reject mismatches. These checks prevent a manipulated artifact from reaching the cluster, but an attacker can still write files anywhere the source-controller pod has permission to write. Separately, a user with permission to create or update `GitRepository` resources can cause source-controller to test for the existence of paths outside the cloned repository. Because the result is exposed via the resource's status, this allows limited enumeration of file paths on the controller pod. This surface exists only on source-controller v1.6.0 and later, where the sparse-checkout feature was introduced. This vulnerability was fixed in source-controller v1.8.5. There is no in-product workaround. Users should upgrade to a patched version. As a defense-in-depth measure for the GitRepository sparse-checkout surface, a `ValidatingAdmissionPolicy` (or a third-party policy engine such as Kyverno or OPA Gatekeeper) can be deployed to reject `GitRepository` resources whose `.spec.sparseCheckout` entries contain `..` or absolute path segments.","state":0,"publishedAt":"2026-09-08T23:17:24.4+00:00","modifiedAt":"2026-09-30T19:57:08.043+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/fluxcd/source-controller/commit/759bd6c451e7cc4327b38f42c8b671980165cb0e","https://github.com/fluxcd/source-controller/pull/2054","https://github.com/fluxcd/source-controller/security/advisories/GHSA-jjrm-hr5f-673x"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-47680","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-23"],"productCriteria":[],"sourceDates":{"published":"2026-09-08T23:17:24.400","lastModified":"2026-09-30T19:57:08.043"},"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-2026-47680","identifiers":["CVE-2026-47680"]},"retained":false,"historicalAffected":[]},{"revision":"57de1460fe894803985bb66c50696960","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-jjrm-hr5f-673x","aliases":["CVE-2026-47680","GO-2026-5472"],"title":"Source controller: Improper path handling allows traversal","description":"### Impact\n\nAn actor with the ability to influence the contents of a bucket referenced by a `Bucket` resource can cause source-controller to write fetched object data to paths outside the per-reconciliation working directory.\n\nThe corruption surface is bounded by source-controller's own and downstream Flux controllers' digest verification: source-controller verifies stored artifact digests during reconciliation and rebuilds on divergence; consumers (kustomize-controller, helm-controller) verify the digest of fetched artifacts and reject mismatches. These checks prevent a manipulated artifact from reaching the cluster, but an attacker can still write files anywhere the source-controller pod has permission to write.\n\nSeparately, a user with permission to create or update `GitRepository` resources can cause source-controller to test for the existence of paths outside the cloned repository. Because the result is exposed via the resource's status, this allows limited enumeration of file paths on the controller pod. This surface exists only on source-controller v1.6.0 and later, where the sparse-checkout feature was introduced.\n\n### Patches\n\nThis vulnerability was fixed in source-controller **v1.8.5**.\n\n### Workarounds\n\nThere is no in-product workaround. Users should upgrade to a patched version.\n\nAs a defense-in-depth measure for the GitRepository sparse-checkout surface, a `ValidatingAdmissionPolicy` (or a third-party policy engine such as Kyverno or OPA Gatekeeper) can be deployed to reject `GitRepository` resources whose `.spec.sparseCheckout` entries contain `..` or absolute path segments.\n\n### References\n\n- [source-controller#2054](https://github.com/fluxcd/source-controller/pull/2054)\n\n### Credits\n\nThe path traversal in the Bucket reconciler was reported by JUNYI LIU. The path traversal in the GitRepository sparse-checkout validation was found and patched by the Flux engineering team.\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n- Open an issue in the source-controller repository.\n- Contact us at the CNCF Flux Channel.","state":0,"publishedAt":"2026-06-05T16:32:51+00:00","modifiedAt":"2026-06-25T23:11:27.0756073+00:00","affected":[{"ecosystem":"Go","name":"github.com/fluxcd/source-controller","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.17"},{"kind":"fixed","version":"1.8.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/fluxcd/source-controller/security/advisories/GHSA-jjrm-hr5f-673x","https://github.com/fluxcd/source-controller/pull/2054","https://github.com/fluxcd/source-controller/commit/759bd6c451e7cc4327b38f42c8b671980165cb0e","https://github.com/fluxcd/source-controller"],"sourceUrl":"https://github.com/advisories/GHSA-jjrm-hr5f-673x","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-jjrm-hr5f-673x","identifiers":["GHSA-jjrm-hr5f-673x","CVE-2026-47680","GO-2026-5472"]},"retained":false,"historicalAffected":[]},{"revision":"cae743549f864187b5e46de3a34bf88f","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5472","aliases":["CVE-2026-47680","GHSA-jjrm-hr5f-673x"],"title":"Source controller: Improper path handling allows traversal in github.com/fluxcd/source-controller","description":"Source controller: Improper path handling allows traversal in github.com/fluxcd/source-controller","state":0,"publishedAt":"2026-06-25T22:34:31+00:00","modifiedAt":"2026-06-25T23:01:14.5836559+00:00","affected":[{"ecosystem":"Go","name":"github.com/fluxcd/source-controller","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.17"},{"kind":"fixed","version":"1.8.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/fluxcd/source-controller/security/advisories/GHSA-jjrm-hr5f-673x","https://github.com/fluxcd/source-controller/commit/759bd6c451e7cc4327b38f42c8b671980165cb0e","https://github.com/fluxcd/source-controller/pull/2054"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5472","license":"OSV · upstream source license applies","key":"osv:GO-2026-5472","identifiers":["GO-2026-5472","CVE-2026-47680","GHSA-jjrm-hr5f-673x"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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