CVE-2026-3415

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.

CVSS v3 8.7 HIGH

8.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.3 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5001/

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-06 22:17

Updated : 2026-08-31 20:14

NVD link : CVE-2026-3415

Mitre link : CVE-2026-3415

CVE.ORG link : CVE-2026-3415

JSON object : View

Products Affected

No product.

CWE

CWE-776

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

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"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5001/", "source": "ed10eef1-636d-4fbe-9993-6890dfa878f8"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "ed10eef1-636d-4fbe-9993-6890dfa878f8", "description": [{"lang": "en", "value": "CWE-776"}]}], "descriptions": [{"lang": "en", "value": "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.\n\nSuccessful 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."}], "lastModified": "2026-08-31T20:14:36.250", "sourceIdentifier": "ed10eef1-636d-4fbe-9993-6890dfa878f8"}