EUVD-2026-39638
GHSA-r865-x64g-f9mm
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Unauthenticated network SSRF with low complexity and scope change into internal systems; primary impact is reading internal resources (C:H) with limited integrity effect and no inherent availability loss.
Primary rating from Vendor (WSO2).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
7DescriptionNVD
The WSO2 API Manager's message flow component, when processing WS-Addressing headers, does not sufficiently validate or restrict user-controlled input within these headers. This omission allows an attacker to manipulate WS-Addressing headers to specify arbitrary destinations for server-initiated requests.
Successful exploitation allows an unauthenticated attacker to control the destination of server-initiated requests originating from the WSO2 API Manager. This direct control can enable unauthorized access to internal network resources or services that would typically be inaccessible from external networks.
AnalysisAI
Server-side request forgery in WSO2 API Manager lets unauthenticated remote attackers coerce the gateway into making server-initiated requests to attacker-chosen destinations by injecting crafted WS-Addressing headers into the message flow. Because the API Manager typically sits at the network edge with reachability into internal systems, this allows pivoting to otherwise unreachable internal resources and services. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the WSO2 API Manager process inbound messages through the message-flow/mediation component that handles WS-Addressing headers - i.e. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Signals are mixed. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An external attacker sends a crafted SOAP request to an internet-facing WSO2 API Manager with a malicious WS-Addressing ReplyTo/To header pointing at an internal address (for example a cloud metadata service or an internal admin endpoint). The gateway, without authentication, issues a server-initiated request to that destination, letting the attacker reach or probe internal services unreachable from outside. … |
| Remediation | Patch available per vendor advisory WSO2-2026-5072: apply the patched WUM/update level for your release line - 3.1.0.360, 3.2.0.465, 3.2.1.84, 4.0.0.385, or 4.2.0.189 or later as applicable (https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5072/). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all WSO2 API Manager instances and confirm external network exposure and internal connectivity scope. …
Sign in for detailed remediation steps and compensating controls.
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External POC / Exploit Code
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