High [CVE-2026-86250] Denial of Service via unbounded chunked cookie processing
This high-severity Red Hat Linux advisory covers CVE-2026-86250; related products: Red Hat OpenShift AI (RHOAI).
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Summary
Denial of Service via unbounded chunked cookie processing. Red Hat rates this important (CVSS 7.5).
Weakness: CWE-606.
Affected product named by the advisory: Red Hat OpenShift AI (RHOAI).
- < 2.0.1-rc
- 2.0.1
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Mitigation checklist
- To mitigate this issue, restrict network access to services utilizing the h3 component, such as odh-feature-server-rhel9 in Red Hat OpenShift AI, to trusted clients and networks only. Implement firewall rules to limit exposure of the affected service ports. This operational control reduces the attack surface by preventing untrusted external access. If the service is reloaded or restarted, ensure firewall rules persist.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
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