CVE-2026-5430

Modified

Published: 06 Aug 2026, 07:33

Last modified:24 Sept 2026, 19:58

Vulnerability Summary

Overall Risk (default)

high

70/100

CVSS Score

10 CRITICAL

v3.1 (cve.org)

EPSS Score

0.37% LOW

0% probability +0.05%

KEV

Listed

CISA

1 listing

Ransomware

No reports

Public exploits

None found

Dark Web

Not detected

Timeline

06 Aug 2026, 07:33

Published

Vulnerability first disclosed

24 Sept 2026, 00:00

Added to CISA KEV

WSO2 Multiple Products Path Traversal Vulnerability

24 Sept 2026, 19:58

Last Modified

Vulnerability information updated

27 Sept 2026, 00:00

CISA Remediation Due

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.

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.

CVSS Metrics

v3.1•CRITICAL•Score: 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.37%• Percentile: 29%

Techniques & Countermeasures

CWE-347•Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Affected Systems

wso2•api_control_plane
≥ 4.5.0, < 4.5.0.58 | ≥ 4.6.0, < 4.6.0.22
wso2•api_manager
≥ 4.1.0, < 4.1.0.257 | ≥ 4.2.0, < 4.2.0.197 | ≥ 4.3.0, < 4.3.0.108 | ≥ 4.4.0, < 4.4.0.72 | ≥ 4.5.0, < 4.5.0.57 | ≥ 4.6.0, < 4.6.0.21
wso2•traffic_manager
≥ 4.5.0, < 4.5.0.56 | ≥ 4.6.0, < 4.6.0.21
wso2•universal_gateway
≥ 4.5.0, < 4.5.0.57 | ≥ 4.6.0, < 4.6.0.21
wso2•wso2 api control plane
≥ 4.5.0, < 4.5.0.58 | ≥ 4.6.0, < 4.6.0.22
wso2•wso2 api manager
≥ 4.1.0, < 4.1.0.257 | ≥ 4.2.0, < 4.2.0.197 | ≥ 4.3.0, < 4.3.0.108 | ≥ 4.4.0, < 4.4.0.72 | ≥ 4.5.0, < 4.5.0.57 | ≥ 4.6.0, < 4.6.0.21
wso2•wso2 carbon api manager rest api utility
≥ 9.20.74, < 9.20.74.401 | ≥ 9.28.116, < 9.28.116.417 | ≥ 9.29.120, < 9.29.120.236 | ≥ 9.30.67, < 9.30.67.167 | ≥ 9.31.86, < 9.31.86.158 | ≥ 9.32.147, < 9.32.147.59
wso2•wso2 traffic manager
≥ 4.5.0, < 4.5.0.56 | ≥ 4.6.0, < 4.6.0.21
wso2•wso2 universal gateway
≥ 4.5.0, < 4.5.0.57 | ≥ 4.6.0, < 4.6.0.21