Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-5430

The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupported algorithm, which is then incorrectly validated, leading to unauthorized access. Successful exploitation of this vulnerability may result in unauthorized access to the system, including the potential compromise of administrative accounts and full account takeover. The CVSS score is adjusted to 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) in single-tenant deployments, reflecting that the impact is contained within a single security authority boundary.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 28.6%
CVSS Severity
CVSS v3 Score 10.0
Proposed Action
WSO2 API Control Plane, API Manager, Traffic Manager & Universal Gateway contain a path traversal vulnerability that could allow for unrestricted file upload and lead to remote code execution.
Ransomware Campaign
Unknown
Products affected by CVE-2026-5430


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