CVE-2023-39967
criticalpriority · track · 40EPSS 0.010 · 64 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (2)
Products and version ranges known to be affected.
also known as (2)
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sources
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references (4)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2023-39967/cnnvd
- https://github.com/wiremock/wiremock/security/advisories/GHSA-676j-xrv3-73vccnnvd
- https://github.com/wiremock/wiremock/security/advisories/GHSA-676j-xrv3-73vcenisa_euvd
- https://github.com/wiremock/wiremock/security/advisories/GHSA-676j-xrv3-73vcExploitVendor Advisorynvd
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