Vulnerability · Published Jun 17, 2026 · Assigned by GitHub_M
CVE-2026-50196Steeltoe.Discovery.Eureka: Unrecognized DataCenterInfo.Name poisons entire registry fetch
High 7.5
In plain English
A high-severity improper input validation in Steeltoe.Discovery.Eureka from SteeltoeOSS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 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 cache refresh task, leaving the local service registry permanently empty or stale. Versions 4.2.0 and 3.4.0 patch the issue. If an immediate upgrade is not possible, remove any registrations using unsupported `DataCenterInfo.name` values from the registry. In mixed Java/Spring and Steeltoe environments, audit for the `Netflix` data center type before deploying Steeltoe Eureka clients.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | steeltoe.discovery.eureka | 4.2.0 | GHSA-j8ph-6fxj-g533 |
| NuGet | steeltoe.discovery.eureka | 3.4.0 | GHSA-j8ph-6fxj-g533 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| SteeltoeOSS | Steeltoe.Discovery.Eureka | >= 4.0.0, < 4.2.0< 3.4.0 |
Weakness: CWE-20, CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-j8ph-6fxj-g533 x_refsource_CONFIRM
- https://github.com/SteeltoeOSS/Steeltoe/commit/b8ed8557bb595863e4f340051d16b26ba40a75f4 x_refsource_MISC
- https://github.com/SteeltoeOSS/Steeltoe/commit/c34a7399e808d0d11dd977460e81df1f2722df28 x_refsource_MISC