How severe is CVE-2023-39967?

This vulnerability has a severity rating of CRITICAL with a CVSS score of 10 out of 10.

What type of vulnerability is CVE-2023-39967?

This is classified as CWE-918, which is a common weakness in software security.

CVE-2023-39967 - CRITICAL Severity | CVSS 10

Vulnerability Description

WireMock is a tool for mocking HTTP services. When certain request URLs like “@127.0.0.1:1234" are used in WireMock Studio configuration fields, the request might be forwarded to an arbitrary service reachable from WireMock’s instance. There are 3 identified potential attack vectors: via “TestRequester” functionality, webhooks and the proxy mode. As we can control HTTP Method, HTTP Headers, HTTP Data, it allows sending requests with the default level of credentials for the WireMock instance. The vendor has discontinued the affected Wiremock studio product and there will be no fix. Users are advised to find alternatives.

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