EUVD-2026-37813
GHSA-227r-jm2g-7cp4
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Network-reachable CF actuator endpoints require only low-privilege CF credentials (PR:L); impact is purely confidentiality (environment/heap data exposure) with no integrity or availability effect.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
3DescriptionCVE.org
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 EndpointPermissions.Restricted, which is mappeds to Cloud Foundry's read_basic_data permission (granted to Space Auditors and similar low-trust roles). Sensitive actuators including heap dump, environment, and thread dump do not raise this to EndpointPermissions.Full, so CF's read_sensitive_data permission flag is not enforced for those endpoints. Spring Boot's equivalent Cloud Foundry integration gates these endpoints with read_sensitive_data by default. Steeltoe.Management.Endpoint 4.2.0 and Steeltoe.Management.EndpointCore 3.4.0 patch the issue. If an immediate upgrade is not possible, explicitly set RequiredPermissions = EndpointPermissions.Full in the options for HeapDumpEndpointOptions, EnvironmentEndpointOptions, and ThreadDumpEndpointOptions; and/or if heap dump, thread dump, or environment are not needed in production, register only the required actuators individually instead of using AddAllActuators().
AnalysisAI
Sensitive actuator endpoints in Steeltoe.Management.Endpoint and Steeltoe.Management.EndpointCore expose heap dumps, environment variables, and thread dumps to low-trust Cloud Foundry roles (Space Auditors) due to incorrect default permission levels. Affected versions inherit the base class default of EndpointPermissions.Restricted - which maps to CF's read_basic_data scope - rather than overriding to EndpointPermissions.Full (read_sensitive_data), the permission level Spring Boot's equivalent integration correctly enforces. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires all of the following: (1) the target application must be deployed on Cloud Foundry - non-CF deployments do not use the EndpointPermissions/CF scope mechanism and are unaffected; (2) the application must run Steeltoe.Management.Endpoint prior to 4.2.0 or EndpointCore prior to 3.4.0; (3) the sensitive actuators (heap dump, environment, or thread dump) must be registered - this occurs automatically if AddAllActuators() is used, which is the common quick-start pattern; (4) the attacker must hold valid CF credentials with at least the Space Auditor role or any other role granted read_basic_data scope in the target CF organization and space. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 6.5 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) accurately reflects the risk profile: network-reachable, low complexity, requiring only low-privilege CF credentials, with high confidentiality impact and no integrity or availability consequence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A Cloud Foundry user with a Space Auditor role - a common low-trust role granted for read-only visibility into a CF space - authenticates to the CF API, then sends a standard HTTP GET request to the /actuator/env, /actuator/heapdump, or /actuator/threaddump endpoint of a vulnerable Steeltoe application. The application responds with full environment variable listings (potentially including database passwords, OAuth client secrets, and cloud service keys) or a heap dump file that can be analyzed offline to extract in-memory credentials. … |
| Remediation | Vendor-released patches are Steeltoe.Management.Endpoint 4.2.0 and Steeltoe.Management.EndpointCore 3.4.0; upgrade to these versions or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Privilege Escalation
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External POC / Exploit Code
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