High [CVE-2026-19651] Authorization bypass via URL query string manipulation
This high-severity Red Hat Linux advisory covers CVE-2026-19651 affecting Red Hat build of Quarkus.
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Summary
A flaw was found in quarkus-spring-web. A remote attacker could exploit this vulnerability by manipulating the URL query string.
The system incorrectly reads the URL query string as a request header, which can lead to an authorization bypass, allowing unauthorized access to resources.
This could enable unauthorized access to resources or functionality within applications utilizing the affected component, elevating the risk to Important due to the potential for privilege escalation or data exposure. Red Hat severity: Important.
Weakness: CWE-551. Affected Red Hat products: Red Hat build of Quarkus.
Red Hat does not currently list a fixing RHSA for this CVE.
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
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 1 hour ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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