CVE-2026-81868

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Source

https://cve.org/CVERecord?id=CVE-2026-81868

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81868.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-81868

Aliases

GHSA-5mq7-rwhj-4fh9

Published

2026-09-17T15:36:23Z

Modified

2026-09-19T03:47:23Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N CVSS Calculator

Summary

Steeltoe: Header-forwarded client cert lacks proof of private-key possession

Details

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.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-288",
        "CWE-295"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81868.json"
}

References

Affected packages

Git / github.com/steeltoeoss/steeltoe

Affected ranges

Type

GIT

Repo

https://github.com/steeltoeoss/steeltoe

Events

Introduced

Fixed

b626ef3d60aaf19c68eeeed5ee81045406c8c6d0

Fixed

a56a5e5a324a1581cbfcdf726dbca3e25b604f86

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.3.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

3.*

3.0.0

3.0.0-m1

3.0.0-m2

3.0.0-m3

3.0.0-rc1

3.0.1

3.0.2

3.0.x_2021-Jan-12

3.1.0

3.1.0-rc1

3.1.0-rc2

3.1.1

3.2.0

3.2.0-rc1

4.*

4.0.0

4.0.0-beta1

4.0.0-rc1

4.1.0

4.2.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81868.json"