Description
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.
Published: 2026-08-06
Score: 8.7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5001/#solution

Tracking

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History

Thu, 06 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
Description 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.
Title XML External Entity (XXE) Injection via Schema Validation in Multiple WSO2 Products Allows File Reading and Denial of Service
First Time appeared Wso2
Wso2 wso2 Api Control Plane
Wso2 wso2 Api Manager
Wso2 wso2 Carbon Api Gateway
Wso2 wso2 Carbon Api Management Implementation
Wso2 wso2 Traffic Manager
Wso2 wso2 Universal Gateway
Weaknesses CWE-776
CPEs cpe:2.3:a:wso2:wso2_api_control_plane:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_api_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carbon_api_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_carbon_api_management_implementation:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_traffic_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:wso2:wso2_universal_gateway:*:*:*:*:*:*:*:*
Vendors & Products Wso2
Wso2 wso2 Api Control Plane
Wso2 wso2 Api Manager
Wso2 wso2 Carbon Api Gateway
Wso2 wso2 Carbon Api Management Implementation
Wso2 wso2 Traffic Manager
Wso2 wso2 Universal Gateway
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H'}

Subscriptions

Wso2 Wso2 Api Control Plane Wso2 Api Manager Wso2 Carbon Api Gateway Wso2 Carbon Api Management Implementation Wso2 Traffic Manager Wso2 Universal Gateway
cve-icon MITRE

Status: PUBLISHED

Assigner: WSO2

Published:

Updated: 2026-08-06T17:32:10.722Z

Reserved: 2026-03-01T18:48:45.632Z

Link: CVE-2026-3415

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-776

    Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')