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CVE-2026-40981 is a high-severity authorization bypass vulnerability in Spring Cloud Config Server when it is configured to use Google Secrets Manager as its backend. The flaw allows a client to craft an HTTP request that causes the server to resolve and return secrets from unintended Google Cloud Platform projects. The issue stems from project resolution logic in the Google Secrets Manager access strategy that accepted a client-controlled project identifier from an HTTP header without sufficient validation or authorization checks. As a result, the server could query secrets from any GCP project that the Config Server's service account was permitted to access, rather than being limited to the intended project context. Affected versions are Spring Cloud Config 3.1.0 through 3.1.13, 4.1.0 through 4.1.9, 4.2.0 through 4.2.6, 4.3.0 through 4.3.2, and 5.0.0 through 5.0.2.
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13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Spring Cloud Config high-severity cross-project access vulnerability affecting GCP secrets, mentioned in a list of recent Spring ecosystem advisories.
A high-severity Spring Cloud Config Server vulnerability that can expose sensitive secrets from unintended Google Cloud Platform projects when Google Secrets Manager is used as the backend.
A vulnerability in Spring Cloud Config where clients can access secrets from any project that the Config Server can access on Google Secrets Manager.
An authorization bypass vulnerability in Spring Cloud Config Server when using Google Secrets Manager, where a client-controlled X-Project-ID header can cause the server to return secrets from unintended GCP projects accessible to the server's service account.
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Cross-references every affected SKU, including bundled OEM variants.
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