CVE-2026-49329
Last modified
CVE-2026-49329 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage() without input validation. EPSS estimates a 0.70% chance of exploitation in the next 30 days.
Description
A flaw was found in openshift/oauth-server. The OAuth login and error page endpoints pass the unauthenticated Accept-Language header to golang.org/x/text/language.ParseAcceptLanguage() without input validation. A bypass of the CVE-2022-32149 mitigation exists: the upstream guard counts only '-' characters but the internal BCP 47 scanner aliases '_' to '-' after the guard check. An unauthenticated attacker can send a crafted Accept-Language header using '_' separators to trigger quadratic-time parsing, consuming excessive CPU and denying authentication to all cluster users.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat OpenShift Container Platform 4.14 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.15 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.16 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.18 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.20 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.21 | All versions |
| Red Hat | Red Hat OpenShift Container Platform 4.22 | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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