CVEvulnerability

CVE-2026-5430

10.0 CRITICAL Known exploited Published 2026-08-06 Modified 2026-09-25 Official page ↗

CISA Known Exploited Vulnerability

WSO2 Multiple Products Path Traversal Vulnerability — WSO2 Multiple Products

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.

Added to KEV
2026-09-24
Remediation due
2026-09-27
Ransomware use
Unknown
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Notes
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5328/ ; ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-5430
Status
Analyzed
Published
2026-08-06
Last modified
2026-09-25
Assigner
ed10eef1-636d-4fbe-9993-6890dfa878f8
CVSS 3.1 (ed10eef1-636d-4fbe-9993-6890dfa878f8)
10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-347

Description

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.

Affected configurations

• wso2 api control plane (>= 4.5.0 < 4.5.0.58) • wso2 api control plane (>= 4.6.0 < 4.6.0.22) • wso2 api manager (>= 4.1.0 < 4.1.0.257) • wso2 api manager (>= 4.2.0 < 4.2.0.197) • wso2 api manager (>= 4.3.0 < 4.3.0.108) • wso2 api manager (>= 4.4.0 < 4.4.0.72) • wso2 api manager (>= 4.5.0 < 4.5.0.57) • wso2 api manager (>= 4.6.0 < 4.6.0.21) • wso2 traffic manager (>= 4.5.0 < 4.5.0.56) • wso2 traffic manager (>= 4.6.0 < 4.6.0.21) • wso2 universal gateway (>= 4.5.0 < 4.5.0.57) • wso2 universal gateway (>= 4.6.0 < 4.6.0.21)

Related

Weakness · CWE (1)

  • CWE-347 Improper Verification of Cryptographic Signature weakness

References