CVE-2026-19651: CWE-639 Authorization Bypass Through User-Controlled Key in IBM Enterprise Build of Quarkus
Description
IBM Enterprise Build of Quarkus versions 3.27.1 through 3.27.5 and 3.33.1 through 3.33.3 contain an authorization bypass vulnerability. This flaw arises from improper mapping of untrusted URL query parameters, allowing attackers to bypass authorization controls. The vulnerability is identified as CWE-639, related to authorization bypass through user-controlled keys. It has a high severity with a CVSS score of 7.4.
CVSS v3.1
Score 7.4high
Affected software
IBM
Enterprise Build of Quarkus
cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.1:*:*:*:*:*:*:*cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.27.5:*:*:*:*:*:*:*cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.1:*:*:*:*:*:*:*cpe:2.3:a:ibm:enterprise_build_of_quarkus:3.33.3:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19651 affects IBM Enterprise Build of Quarkus in versions 3.27.1 to 3.27.5 and 3.33.1 to 3.33.3. The vulnerability is due to incorrect handling of URL query parameters, which can be manipulated by an attacker to bypass authorization mechanisms. This is classified under CWE-639 (Authorization Bypass Through User-Controlled Key). The CVSS v3.1 score is 7.4, indicating a high severity with network attack vector, high complexity, no privileges required, no user interaction, and impacts confidentiality and integrity but not availability.
Potential Impact
An attacker can bypass authorization controls by manipulating URL query parameters, potentially gaining unauthorized access to sensitive information or functionality. The impact affects confidentiality and integrity but does not affect availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
No explicit patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, restrict access to affected versions and monitor for suspicious activity related to URL query parameters.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-12T17:38:20.473Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa07237acd9273b4931f74b
Added to database: 09/08/2026, 20:38:15 UTC
Last enriched: 09/16/2026, 02:39:57 UTC
Last updated: 10/22/2026, 01:15:21 UTC
Views: 84
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