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CVE-2026-59148 is a vulnerability in Mockoon versions before 9.7.0. The administrative API is enabled by default in shipped runtimes and is served from the same Express listener as user-defined mock routes without authentication. Its permissive cross-origin policy permits arbitrary origins and write methods. An unauthenticated network-reachable caller can access administrative functions to disclose Mockoon-prefixed environment variables, set process environment variables, alter mock route responses and headers, access transaction logs and server-sent events, and purge state.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An unauthenticated administrative API exposure in Mockoon commons-server and CLI. Default-enabled admin endpoints lack authentication and use permissive wildcard CORS, allowing reachable attackers—including malicious websites targeting a developer's local Mockoon instance—to read secrets and request logs, modify arbitrary process environment variables, alter mock responses, and purge server state.
An unauthenticated administrative API exposure in Mockoon combined with permissive wildcard CORS that allows remote attackers who can reach the mock server port to read MOCKOON_* environment variables, set arbitrary environment variables, modify mock routes and responses, access logs/SSE streams, and purge state.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.