CVE-2026-5430
wso2 · published 2026-08-06
Source record Collected from the National Vulnerability Database (NVD)
CISA Known Exploited Vulnerabilities
CISA lists this CVE as known exploited (added 2026-09-24).
- CISA's name for it: WSO2 Multiple Products Path Traversal Vulnerability
- CISA's description: 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.
- Known ransomware campaign use, per CISA: Unknown
Source: CISA KEV catalog (CC0 1.0).
Description
Description by WSO2 LLC via the CVE Program.
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.
Status at the source
- NVD status: Analyzed
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| WSO2 | WSO2 Universal Gateway | 4.5.0 – before 4.5.0.57: affected 4.6.0 – before 4.6.0.21: affected |
| WSO2 | WSO2 Traffic Manager | 4.5.0 – before 4.5.0.56: affected 4.6.0 – before 4.6.0.21: affected |
| WSO2 | WSO2 API Control Plane | 4.5.0 – before 4.5.0.58: affected 4.6.0 – before 4.6.0.22: affected |
| WSO2 | WSO2 API Manager | 0 – before 4.1.0: unknown 4.1.0 – before 4.1.0.257: affected 4.2.0 – before 4.2.0.197: affected 4.3.0 – before 4.3.0.108: affected 4.4.0 – before 4.4.0.72: affected 4.5.0 – before 4.5.0.57: affected 4.6.0 – before 4.6.0.21: affected |
| WSO2 | WSO2 Carbon API Manager Rest API Utility | 9.20.74 – before 9.20.74.401: affected 9.28.116 – before 9.28.116.417: affected 9.29.120 – before 9.29.120.236: affected 9.30.67 – before 9.30.67.167: affected 9.31.86 – before 9.31.86.158: affected 9.32.147 – before 9.32.147.59: affected 9.33.106 – * and earlier: unaffected |
Products named in NVD's CPE match criteria (4)
cpe:2.3:a:wso2:api_control_plane:*:*:*:*:*:*:*:*cpe:2.3:a:wso2:api_manager:*:*:*:*:*:*:*:*cpe:2.3:a:wso2:traffic_manager:*:*:*:*:*:*:*:*cpe:2.3:a:wso2:universal_gateway:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 10 CRITICAL — as published by WSO2 LLC (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: yes · Technical impact: total
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5328/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-5430
Source dates: published 2026-08-06, last changed 2026-09-25. DeSpy's copy of this version is dated 2026-09-28.
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