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CVE-2020-5405 is a directory traversal vulnerability in the spring-cloud-config-server module of Spring Cloud Config. Affected versions allow attacker-controlled request components to influence the path used to resolve configuration resources, enabling retrieval of arbitrary configuration files via specially crafted URLs. The provided analysis indicates the vulnerable flow passes user-controlled name and label values through EnvironmentController into NativeEnvironmentRepository, where resource locations are constructed and later accessed through resource-loading logic that ultimately uses URL-based access. The exploitation technique relies on crafted path elements and normalization behavior, including use of the '(_)' placeholder that is converted to '/' during normalization, allowing traversal sequences to be introduced. The issue affects Spring Cloud Config 2.2.x prior to 2.2.2, 2.1.x prior to 2.1.7, and older unsupported versions, according to the CVE description provided in the content.
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Cross-references every affected SKU, including bundled OEM variants.
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