JFrog Security Research · October 7, 2026

LMCache advisory: restrict the multiprocess ZeroMQ listener

Why it matters

JFrog’s October 7 advisory describes CVE-2026-105192 in LMCache’s multiprocess transport: an unauthenticated message can reach Python pickle deserialization before request-handler checks and execute code with the service’s privileges. Remote exposure depends on making the ZeroMQ listener reachable; it binds to localhost by default, and in-process use does not expose this transport. The advisory lists versions from 0.3.9 through 0.5.5 and 0.5.6 release-candidate/development builds as affected, with no fixed release identified at publication.

My takeaway: Check the deployed mode, actual listener address and firewall rules before assigning exposure. Keep the port local or limited to trusted peers, reduce service privileges, and check the current upstream fix status. Network isolation limits reachability but does not repair unsafe deserialization.
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