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CVE-2026-47680— Flux CD project Source controller 路径遍历漏洞

一分钟漏洞结论

影响对象
fluxcd source-controller
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

Flux CD project Source controller是Flux CD project组织开源的一款源码控制器。 Flux CD project Source controller 0.0.17版本至1.8.4版本存在安全漏洞,该漏洞源于路径验证不当,可能导致攻击者将获取的对象数据写入工作目录之外的路径,以及通过GitRepository资源枚举控制器Pod上的文件路径。

CVSS 5.3 · Medium EPSS 0.46% · P39

可能的 ATT&CK 技术 1 AI

T1083 · File and Directory Discovery

影响版本矩阵 1

厂商产品 版本范围状态
fluxcd source-controller >= 0.0.17, < 1.8.5 affected
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一、 漏洞 CVE-2026-47680 基础信息

漏洞信息

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Vulnerability Title
Source controller: Improper path handling allows traversal
来源: CVE Program / CVE List V5
Vulnerability 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.
来源: CVE Program / CVE List V5
CVSS Information
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
来源: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
来源: CVE Program / CVE List V5
Vulnerability Title
Flux CD project Source controller 路径遍历漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Flux CD project Source controller是Flux CD project组织开源的一款源码控制器。 Flux CD project Source controller 0.0.17版本至1.8.4版本存在安全漏洞,该漏洞源于路径验证不当,可能导致攻击者将获取的对象数据写入工作目录之外的路径,以及通过GitRepository资源枚举控制器Pod上的文件路径。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
fluxcd source-controller >= 0.0.17, < 1.8.5 -

二、漏洞 CVE-2026-47680 的公开POC

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三、漏洞 CVE-2026-47680 的情报信息

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CVE-2026-47680 补丁与修复 (2)

CVE-2026-47680 厂商安全公告 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2026-47680

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