CVE-2026-81868: Authentication Bypass Using an Alternate Path or Channel

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. Prior to 4.3.0, Steeltoe.Security.Authorization.Certificate deployments using AddOrgAndSpacePolicies and UseCertificateAuthorization trust the public certificate supplied i...

PT-2026-94384

Name of the Vulnerable Software and Affected Versions Steeltoe versions prior to 4.3.0 Description Steeltoe.Security.Authorization.Certificate deployments using AddOrgAndSpacePolicies and UseCertificateAuthorization trust the public certificate provided in the X-Client-Cert request header without...

CVE-2026-81516: Improper Handling of Exceptional Conditions

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, ConsulDiscoveryClient constructs ConsulServiceInstance objects by parsing each registration's secure metadata with a strict Boolean conversion. A...

CVE-2026-81515: Improper Handling of Exceptional Conditions

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. From 4.0.0 until 4.3.0, EurekaDiscoveryClient deserializes the registry response as one unit, and an unrecognized actionType or status, a non-Boolean...

PT-2026-94381

Name of the Vulnerable Software and Affected Versions Steeltoe versions prior to 4.3.0 Description The /actuator/httpexchanges endpoint processes recorded request URIs using MaskedUri, which only masks user information and ignores query strings. When the...

PT-2026-94382

Name of the Vulnerable Software and Affected Versions Steeltoe versions 4.0.0 through 4.2.9 Description Steeltoe's EurekaDiscoveryClient deserializes the registry response as a single unit. If a registered instance contains a field value that cannot be parsed, the deserialization of the entire...

PT-2026-94383

Name of the Vulnerable Software and Affected Versions Steeltoe versions 4.0.0 through 4.2.9 Description The ConsulDiscoveryClient parses the secure metadata field of registered service instances using a strict Boolean conversion. If a principal registers a service with a secure value other than...

CVE-2026-75523: Exposure of Sensitive Information to an Unauthorized Actor

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. Prior to 4.3.0, the Steeltoe.Management.Endpoint /actuator/httpexchanges endpoint passes recorded request URIs through MaskedUri, which masks URI user information but does...

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...

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...

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...

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-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...

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...

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...