Steeltoe's sensitive actuators (heapdump/env) only require Restricted permission
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation, Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-269 and CWE-285.
Summary
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()`.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SteeltoeOSS | Steeltoe.Management.Endpoint | before 4.2.0 | 4.2.0 | Patch available | CNA |
| SteeltoeOSS | Steeltoe.Management.EndpointBase | before 3.4.0 | 3.4.0 | Patch available | CNA |
| — | Steeltoe.Management.Endpoint (NuGet) | before 4.2.0 | 4.2.0 | Patch available | GHSA-227r-jm2g-7cp4 |
| — | Steeltoe.Management.EndpointBase (NuGet) | before 3.4.0 | 3.4.0 | Patch available | GHSA-227r-jm2g-7cp4 |
- Steeltoe.Management.Endpoint VendorSteeltoeOSS Affected before 4.2.0 Fixed in 4.2.0 Patch available CNA
- Steeltoe.Management.EndpointBase VendorSteeltoeOSS Affected before 3.4.0 Fixed in 3.4.0 Patch available CNA
- Steeltoe.Management.Endpoint (NuGet) Vendor— Affected before 4.2.0 Fixed in 4.2.0 Patch available GHSA-227r-jm2g-7cp4
- Steeltoe.Management.EndpointBase (NuGet) Vendor— Affected before 3.4.0 Fixed in 3.4.0 Patch available GHSA-227r-jm2g-7cp4
Remediation
- Fix · CNA Steeltoe.Management.Endpoint (SteeltoeOSS) Fixed in 4.2.0
- Fix · CNA Steeltoe.Management.EndpointBase (SteeltoeOSS) Fixed in 3.4.0
- Fix · GHSA-227r-jm2g-7cp4 Steeltoe.Management.Endpoint (NuGet) Fixed in 4.2.0 Advisory →
- Fix · GHSA-227r-jm2g-7cp4 Steeltoe.Management.EndpointBase (NuGet) Fixed in 3.4.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-50201
- 2026-10-03 Alias added: GHSA-227r-jm2g-7cp4
References
Other 4
- https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-227r-jm2g-7cp4
- https://github.com/SteeltoeOSS/Steeltoe/commit/b39defa4db5f44f8696c456866b3a5b900d8d96b
- https://github.com/SteeltoeOSS/Steeltoe/commit/da6c604decd992f61aeef763f5814102dcb088c7
- https://github.com/SteeltoeOSS/security-advisories
More SteeltoeOSS vulnerabilities
- TI-2024-27048 Basic Auth Credential Leakage to Logs After Fetch Registry Error in Steeltoe.Discovery.Eureka with Peer Awareness CVSS 3.1MEDIUM 5.3
- TI-2026-36953 Steeltoe vulnerable to management-port isolation bypass via spoofed Host header CVSS 3.1HIGH 8.2
- TI-2026-56238 Steeltoe.Discovery.Consul: malformed 'secure' metadata aborts service instance lookup (DoS) CVSS 3.1HIGH 7.5
- TI-2026-56237 Steeltoe.Discovery.Eureka: malformed enum/bool/timestamp field aborts entire registry fetch (DoS) CVSS 3.1HIGH 7.5
- TI-2026-36955 Steeltoe.Discovery.Eureka: Unrecognized DataCenterInfo.Name poisons entire registry fetch CVSS 3.1HIGH 7.5
- TI-2026-36959 Steeltoe's env sanitizer misses connection strings — leaks embedded DB passwords CVSS 3.1HIGH 7.5
Sources
- CVE-2026-50201 · CVE Program
- CVE-2026-50201 · NVD
- FIRST EPSS
- GHSA-227r-jm2g-7cp4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences