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Vulnerability record · CVE-2026-14450 · published 10 August 2026

CVE-2026-14450: Authentication bypass by spoofing vulnerability

A flaw was found in the MaaS API. This vulnerability allows any pod within the cluster to bypass the Kuadrant AuthPolicy gateway by forging HTTP headers, specifically `X-MaaS-Username` and `X-MaaS-Group`, which are trusted verbatim. This lack of first-party authentication enables an attacker to gain unauthorized access and escalate privileges. The concrete consequences include the ability to mint Kubernetes ServiceAccount tokens in other tenants' namespaces, revoke API keys, and exfiltrate sensitive model access configuration.

9.9 CVSS 3.1 Critical EPSS 0.69% · top 49.2% CWE-290 · Authentication bypass by spoofing Awaiting Analysis
9.9CVSS 3.1 base score
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
27 Aug 2026Last modified by NVD

Description

A flaw was found in the MaaS API. This vulnerability allows any pod within the cluster to bypass the Kuadrant AuthPolicy gateway by forging HTTP headers, specifically `X-MaaS-Username` and `X-MaaS-Group`, which are trusted verbatim. This lack of first-party authentication enables an attacker to gain unauthorized access and escalate privileges. The concrete consequences include the ability to mint Kubernetes ServiceAccount tokens in other tenants' namespaces, revoke API keys, and exfiltrate sensitive model access configuration.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

LinkTags
https://access.redhat.com/errata/RHSA-2026:53262
https://access.redhat.com/errata/RHSA-2026:60520
https://access.redhat.com/security/cve/CVE-2026-14450
https://bugzilla.redhat.com/show_bug.cgi?id=2496373

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Source: NIST National Vulnerability Database (record CVE-2026-14450), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.