Sceawere

Vulnerability Detail

CVE-2026-81868 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
Medium
Score / CVSS
6.5
Creation Date
1d ago
Vendor
SteeltoeOSS
Product
security-advisories
Attack Type
CWE-288: Authentication Bypass Using an Alternate Path or Channel
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack Complexity
HIGH

Narrative and Response

Description

Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. Prior to 4.3.0, Steeltoe.Security.Authorization.Certificate deployments using AddOrgAndSpacePolicies() and UseCertificateAuthorization() trust the public certificate supplied in the X-Client-Cert request header without proving possession of the corresponding private key. Common Cloud Foundry routers do not remove this header from inbound requests. When inbound requests are not restricted to a known trusted proxy source IP, an attacker who obtains the public certificate of an application instance in the target organization or space and can reach the application can spoof X-Client-Cert to bypass the SameOrg and SameSpace policies for the certificate validity period. This issue is fixed in version 4.3.0.

Executive Summary

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Technical Details

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Mitigations

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References

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Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-09-17T16:17:47.607Z",
  "pubdate": "2026-09-17T16:17:47.607Z"
}