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TI-2023-20860 Aliases CVE-2023-39967

Full read and controlled SSRF through URL parameter when testing a request inside wiremock-studio

Priority HIGH 82CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01047 64th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
wiremockwiremockAll versions—No fix listedCNA
  • wiremock Vendorwiremock Affected All versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:wiremock:studio:*:*:*:*:*:*:*:*up to 2.32.0-17Vulnerablewiremock
  • cpe:2.3:a:wiremock:studio:*:*:*:*:*:*:*:* Versions up to 2.32.0-17 Vulnerable ·wiremock

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-39967

References

Exploit 1

  • TI-2023-21929 Domain restrictions bypass via DNS Rebinding in WireMock and WireMock Studio CVSS 3.1MEDIUM 6.6
  • TI-2023-21927 Controlled SSRF through URL in the WireMock CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences