Advisory severityHigh8.1Red Hat Linux

High [CVE-2026-66070] Cross-Origin Resource Sharing (CORS) misconfiguration allows unauthorized actions

This high-severity Red Hat Linux advisory covers CVE-2026-66070; related products: Red Hat Hardened Images.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-66070 Source published Sep 23, 2026Source updated Sep 23, 2026

VulniPulse record published Sep 25, 2026Record updated Sep 28, 2026

CVE-2026-66070

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Summary

Cross-Origin Resource Sharing (CORS) misconfiguration allows unauthorized actions. Red Hat rates this important (CVSS 8.1).

Weakness: CWE-942. Red Hat lists fixing advisory RHSA-2026:67552 with package rabbitmq-server4-3-main-4.3.6-1.hum1.

Affected product named by the advisory: Red Hat Hardened Images.

Affected versions

< 3.13.17
< 4.0.22
< 4.1.13
< 4.2.6

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Fixed versions

rabbitmq-server4-3-main-4.3.6-1.hum1
RHSA-2026:67552

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Replace wildcard CORS with explicit trusted origins and avoid administrator Basic credentials in browsers used for untrusted sites.

Official advisory · high-confidence parse· fetched 8 days ago·verify at source

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