CVE-2026-50194

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 85% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. When Steeltoe management endpoints versions 3.2.2 through 3.3.0 and 4.1.0 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. Versions 3.4.0 and 4.2.0 patch the issue. If an immediate upgrade to a patched version is not possible, add explicit ASP.NET Core authorization (RequireAuthorization) to all sensitive actuator endpoints as a defense-in-depth measure independent of port isolation and/or configure the reverse proxy or load balancer to enforce the Host header value and prevent clients from setting an arbitrary port.

CVSS v3
8.2
EG Score
8.2HIGHmedium confidence
EG Risk
41
EG Risk 41/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity82% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

Published

June 17, 2026

Last Modified

June 22, 2026

Advisory Details (3)

Auto-updated Jun 17, 2026
Patch available. Sources: github_commit, github.
githubMentions a patch (unverified)

Management-port isolation bypass via spoofed Host header · Advisory · SteeltoeOSS/security-advisories · GitHub

https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-58f6-6rj2-3v8r
github_commit Patch Available

commit b7ca93c510aa (SteeltoeOSS/Steeltoe)

Patch available: SteeltoeOSS/Steeltoe 4.2.0 (contains commit b7ca93c510aa)

https://github.com/SteeltoeOSS/Steeltoe/commit/b7ca93c510aaa08d7e4ebec40ce20c5811c2c4b6
github_commit Patch Available

commit 4cbc352fe89a (SteeltoeOSS/Steeltoe)

Patch available: SteeltoeOSS/Steeltoe 3.4.0 (contains commit 4cbc352fe89a)

https://github.com/SteeltoeOSS/Steeltoe/commit/4cbc352fe89ac2e6c609554e435ab28996fec5e9

Vendor Advisories for CVE-2026-50194(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
NuGet(2)
PackageVulnerable rangeFix by version rangeDependents
Steeltoe.Management.Endpoint1.1.0 ... 4.1.0 (6 versions)
  • every version up to 4.2.0: fixed in 4.2.0
—
Steeltoe.Management.EndpointCore3.2.2 ... 3.3.0 (8 versions)
  • 3.2.2 up to 3.4.0: fixed in 3.4.0
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 139 total refreshes for this CVE.

  1. 2026-10-06 15:18 UTCEPSS rescore
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  1. 2026-09-02 14:12 UTCEPSS rescore
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  75. 2026-07-15 02:00 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

3 shown

NuGet:Steeltoe.Management.EndpointCore · NuGet:Steeltoe.Management.Endpoint

Frequently asked(5)

What is CVE-2026-50194?
CVE-2026-50194 is a high vulnerability published on June 17, 2026. Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. When Steeltoe management endpoints versions 3.2.2 through 3.3.0 and 4.1.0 are configured to listen on an alternate port (Management:Endpoints:Port is configured), the…
When was CVE-2026-50194 disclosed?
CVE-2026-50194 was first published on June 17, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50194 actively exploited?
CVE-2026-50194 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-50194?
CVE-2026-50194 has a CVSS base score of 8.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-50194?
A fix for CVE-2026-50194 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-50194 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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