GHSA-4J9M-H44M-2HV8 Steeltoe: OAEP setting silently selects PKCS#1 v1.5 padding

Summary Configuring encrypt:rsa:algorithm=OAEP does not enable OAEP encryption. Due to an incorrect BouncyCastle transformation string, the OAEP setting selects PKCS1 v1.5, which is the same algorithm as the DEFAULT setting. Impact Operators who configure encrypt:rsa:algorithm=OAEP to obtain...

EUVD-2026-37820

Steeltoe: TLS private keys written to /tmp with default permissions, never deleted...

GHSA-227R-JM2G-7CP4 Steeltoe's sensitive actuators (heapdump/env) only require Restricted permission

Summary All Steeltoe actuator endpoints default to EndpointPermissions.Restricted, which is mapped to Cloud Foundry's readbasicdata permission granted to Space Auditors and similar low-trust roles. Sensitive actuators including heap dump, environment, and thread dump do not raise this to...

EUVD-2026-37813

Steeltoe's sensitive actuators heapdump/env only require Restricted permission...

GHSA-Q62H-354G-5R85 Steeltoe's env sanitizer misses connection strings — leaks embedded DB passwords

Summary The Sanitizer component in the Environment actuator redacts configuration values by matching the configuration key name against a suffix list. The default list password, secret, key, token, .credentials., vcapservices does not cover the standard .NET pattern ConnectionStrings: or Steeltoe...

GHSA-J8PH-6FXJ-G533 Steeltoe.Discovery.Eureka: Unrecognized DataCenterInfo.Name poisons entire registry fetch

Summary DataCenterInfo.FromJson throws ArgumentException for any name value other than "MyOwn" or "Amazon", despite the Java Eureka specification defining a third valid value: "Netflix". The exception propagates through the entire registry deserialization chain and is swallowed by the periodic...

EUVD-2026-37806

Steeltoe.Discovery.Eureka: Unrecognized DataCenterInfo.Name poisons entire registry fetch...

EUVD-2026-37801

Steeltoe vulnerable to management-port isolation bypass via spoofed Host header...

GHSA-58F6-6RJ2-3V8R Steeltoe vulnerable to management-port isolation bypass via spoofed Host header

Summary When Steeltoe management endpoints are configured to listen on an alternate port Management:Endpoints:Port is configured, the middleware responsible for restricting access to the endpoints uses the Host HTTP header rather than the actual network socket port. Impact An unauthenticated remo...

Cleartext Storage of Sensitive Information

Overview Affected versions of this package are vulnerable to Cleartext Storage of Sensitive Information in the process that handles service bindings from VCAPSERVICES containing TLS client credentials. An attacker can access sensitive private key material by reading temporary files created with...

Exposure of Resource to Wrong Sphere

Overview Affected versions of this package are vulnerable to Exposure of Resource to Wrong Sphere in the TokenKeyResolver function. An attacker can bypass authentication and gain unauthorized access by exploiting the shared static JWKS cache across multiple schemes, allowing a key fetched for one...

Exposure of Resource to Wrong Sphere

Overview Affected versions of this package are vulnerable to Exposure of Resource to Wrong Sphere in the TokenKeyResolver function. An attacker can bypass authentication and gain unauthorized access by exploiting the shared static JWKS cache across multiple schemes, allowing a key fetched for one...

CVE-2026-50202

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Security.Authentication.CloudFoundryBase prior to version 3.4.0, Steeltoe.Security.Authentication.JwtBearer prior to version 4.2.0, and...

CVE-2026-50267

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Configuration.Abstractions 4.0.0 through 4.1.0, when MySQL or PostgreSQL service bindings from VCAPSERVICES include TLS client credentials, the Connectors libra...

CVE-2026-50201

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Management.Endpoint prior to version 4.2.0 and Steeltoe.Management.EndpointCore prior to version 3.4.0, all Steeltoe actuator endpoints default to...

CVE-2026-50268

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Configuration.Encryption 4.0.0 through 4.1.0, configuring encrypt:rsa:algorithm=OAEP does not enable OAEP encryption. Due to an incorrect BouncyCastle...

CVE-2026-50200

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Management.Endpoint prior to version 4.2.0 and Steeltoe.Management.EndpointCore prior to version 3.4.0, the Sanitizer component in the Environment actuator...

CVE-2026-50196

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Discovery.Eureka prior to versions 4.2.0 and 3.4.0, DataCenterInfo.FromJson throws ArgumentException for any name value other than "MyOwn" or "Amazon", despite...

CVE-2026-50194

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. When Steeltoe management endpoints versions 3.2.2 through 3.3.0 and 4.1.0 are configured to listen on an alternate port Management:Endpoints:Port is configured, the...

CVE-2026-50268 Steeltoe: OAEP setting silently selects PKCS#1 v1.5 padding

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. In Steeltoe.Configuration.Encryption 4.0.0 through 4.1.0, configuring encrypt:rsa:algorithm=OAEP does not enable OAEP encryption. Due to an incorrect BouncyCastle...