Medium [CVE-2026-84373] Arbitrary File Read via Path Traversal in HMR WebSocket
This medium-severity Red Hat Linux advisory covers CVE-2026-84373 affecting Red Hat AMQ Broker 7, Red Hat Ansible Automation Platform 2, Red Hat Build of Keycloak.
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Summary
A flaw was found in Vitest, a testing framework. A remote attacker, able to reach an exposed development server, could exploit an issue in the mockerPlugin and interceptorPlugin exports.
These plugins register a handler on Vite's unauthenticated HMR WebSocket without properly validating redirect targets. By submitting a specially crafted URL with path traversal segments, an attacker could read arbitrary local files accessible by the development server process, leading to information disclosure.
Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N). Weakness: CWE-22.
Affected Red Hat products: Red Hat AMQ Broker 7; Red Hat Ansible Automation Platform 2; Red Hat Build of Keycloak; Red Hat Build of Podman Desktop; Red Hat Enterprise Linux 10; Red Hat JBoss Enterprise Application Platform 8; Red Hat JBoss Enterprise Application Platform Expansion Pack; Red Hat Trusted Artifact Signer.
Red Hat lists Red Hat Hardened Images as not affected. Will not fix / out of support: Red Hat Ansible Automation Platform 2; Red Hat Trusted Artifact Signer.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: rh-podman-desktop.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- 4.1.11
- 5.0.0-rc
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation
Upgrade to a fixed release: 4.1.11, 5.0.0-rc. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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