Medium 5.9Published Sep 17, 2026

CVE-2026-75523Steeltoe.Management.Endpoint: HttpExchanges URI masking leaks query-string secrets

Updated under an hour ago (2026-10-19 10:00 UTC)

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It affects SteeltoeOSS security-advisories. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. Prior to 4.3.0, the Steeltoe.Management.Endpoint /actuator/httpexchanges endpoint passes recorded request URIs through MaskedUri, which masks URI user information but does not inspect query strings. When Management:Endpoints:HttpExchanges:IncludeQueryString is enabled, the HttpExchangeRequest response can disclose OAuth tokens, password-reset tokens, signed-URL signatures, API keys, and other query-string secrets from prior traffic to a caller that can reach the explicitly exposed endpoint. The Steeltoe.Management.Endpoint.Actuators.HttpExchanges DEBUG logger also records these URIs, creating a second disclosure channel for users with log access. This issue is fixed in version 4.3.0.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-200
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Sep 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

SteeltoeOSS security-advisories steeltoeoss:security_advisories (from the name)	before 4.3.0	CNA record

References

https://github.com/SteeltoeOSS/security-advisories/security/advisories/GHSA-8phw-xrj9-cpqpx-refsource-confirm
https://github.com/SteeltoeOSS/Steeltoe/commit/9bf0ecb9f2d4a34b65f61d41c5625d49071ae9fax-refsource-misc
https://github.com/SteeltoeOSS/Steeltoe/releases/tag/4.3.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.