CVE-2026-50196Network attack vectorHinoki check available

Service discovery outage via rejected data center name

Published Jun 17, 2026 · Updated Jun 17, 2026

Denial of service in Steeltoe.Discovery.Eureka before 3.4.0 and 4.0.0 through 4.1.0 allows remote attackers to disable service discovery. DataCenterInfo.FromJson rejects valid Netflix and other unrecognized name values by throwing an exception that aborts registry deserialization, while the refresh task swallows the failure. An affected application must use EurekaDiscoveryClient and receive a registry containing such a value; new clients retain an empty registry and running clients retain stale entries.

CVSS severity7.5
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in Steeltoe.Discovery.Eureka before 3.4.0 and 4.0.0 through 4.1.0 allows remote attackers to disable service discovery. DataCenterInfo.FromJson rejects valid Netflix and other unrecognized name values by throwing an exception that aborts registry deserialization, while the refresh task swallows the failure. An affected application must use EurekaDiscoveryClient and receive a registry containing such a value; new clients retain an empty registry and running clients retain stale entries.

The record

CVE
CVE-2026-50196
Published
Jun 17, 2026
Updated
Jun 17, 2026
Vendor
Steeltoe
Product
Steeltoe.Discovery.Eureka
Classifications
CWE-400, CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.4.0
  2. Affected versionversion=>= 4.0.0, < 4.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Steeltoe · Steeltoe.Discovery.Eurekaversion=< 3.4.0; version=>= 4.0.0, < 4.2.0

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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