High
XML External Entity (XXE) Injection via Schema Validation in Multiple WSO2 Products Allows File Reading and Denial of Service
Type: advisorySources: Official CVE List
The XML and schema validation functionalities within the SchemaValidator Mediator process XML input as part of validation flows. Under certain conditions, the XML parser allows the resolution of external entities when handling user-supplied XML content during validation operations. This behavior can occur when an attacker supplies crafted XML payloads to the relevant mediator flows with sufficient privileges. Successful exploitation may allow a highly privileged actor to read files accessible within the server hosting the affected product. Additionally, it may be possible to trigger outbound requests to unintended internal or external locations, depending on the server environment and network configuration. Specially crafted XML payloads can also lead to excessive resource consumption during parsing, impacting the availability of the product.
- Products
- WSO2 API Control Plane, WSO2 API Manager, WSO2 Carbon API Gateway, WSO2 Carbon API Management Implementation, WSO2 Traffic Manager, WSO2 Universal Gateway
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-3415
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:49 UTC · Revision 1
Source evidence
XML External Entity (XXE) Injection via Schema Validation in Multiple WSO2 Products Allows File Reading and Denial of Service
core-cve · Original sourcePublished 6 Aug 2026, 17:32 UTC
The XML and schema validation functionalities within the SchemaValidator Mediator process XML input as part of validation flows. Under certain conditions, the XML parser allows the resolution of external entities when handling user-supplied XML content during validation operations. This behavior can occur when an attacker supplies crafted XML payloads to the relevant mediator flows with sufficient privileges. Successful exploitation may allow a highly privileged actor to read files accessible within the server hosting the affected product. Additionally, it may be possible to trigger outbound requests to unintended internal or external locations, depending on the server environment and network configuration. Specially crafted XML payloads can also lead to excessive resource consumption during parsing, impacting the availability of the product.
cve:CVE-2026-3415
WSO2 API Manager
Fixed versions: Not specified
WSO2 Universal Gateway
Fixed versions: Not specified
WSO2 Traffic Manager
Fixed versions: Not specified
WSO2 API Control Plane
Fixed versions: Not specified
WSO2 Carbon API Gateway
Fixed versions: Not specified
WSO2 Carbon API Management Implementation
Fixed versions: Not specified
Complete source record
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"title": "XML External Entity (XXE) Injection via Schema Validation in Multiple WSO2 Products Allows File Reading and Denial of Service",
"summary": "The XML and schema validation functionalities within the SchemaValidator Mediator process XML input as part of validation flows. Under certain conditions, the XML parser allows the resolution of external entities when handling user-supplied XML content during validation operations. This behavior can occur when an attacker supplies crafted XML payloads to the relevant mediator flows with sufficient privileges. Successful exploitation may allow a highly privileged actor to read files accessible within the server hosting the affected product. Additionally, it may be possible to trigger outbound requests to unintended internal or external locations, depending on the server environment and network configuration. Specially crafted XML payloads can also lead to excessive resource consumption during parsing, impacting the availability of the product.",
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