WSO2 Multiple Products
CVE-2026-5430
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.
What this means for your business
- It affects WSO2 Multiple Products. It matters if your company, or a supplier that handles your data, runs it.
- Attackers are already using it. CISA added it to its list of flaws used in real attacks on 24 September 2026.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 22% chance of attack attempts being seen in the next 30 days, ranking above 97% of all known flaws.
What to do
- 1Check whether your company or your suppliers run WSO2 Multiple Products, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
- 3Treat it as urgent. US federal agencies must fix it by 27 September 2026. That deadline does not apply to private companies, but it shows how seriously CISA takes it.
- 4Because attackers have used it, check the affected systems for signs of a break-in, not only for the update.
Fastnexa security experts
Attackers are already using this flaw. Is your WSO2 Multiple Products exposed?
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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.
CISA’s wording, unedited. The notes it mentions are in CISA’s catalogue entry.
Scoring
- CVSS
- 10.0 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H- Weakness
- CWE-347
- Assigned by
- ed10eef1-636d-4fbe-9993-6890dfa878f8
Dates
- Published
- 2026-09-24
- Last modified
- 2026-09-25
- Added to KEV
- 2026-09-24
- Remediation due
- 2026-09-27
- Sources
- CISA KEV, NVD
Affected products
- Wso2 Api Control Plane4.5.0 - 4.5.0.58, 4.6.0 - 4.6.0.22
- Wso2 Api Manager4.1.0 - 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 Manager4.5.0 - 4.5.0.56, 4.6.0 - 4.6.0.21
- Wso2 Universal Gateway4.5.0 - 4.5.0.57, 4.6.0 - 4.6.0.21
As listed in the NVD configuration data. Not a statement about your estate.
Coverage
- CISA warns of Sharepoint, WSO2, Adobe Commerce flaws exploited in attacksBleepingComputer · 2026-09-25
- WSO2 and Adobe Commerce Flaws Exploited in Attacks, Added to CISA KEVThe Hacker News · 2026-09-25