CVE-2026-105192: critical vulnerability in LMCache
LMCache Unauthenticated RCE in multiprocess mode via pickle deserialization
Published
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.7%
exploitation probability
0.7%top 50% of all CVEs
observed exploitation
nono source reports it
LMCache multiprocess mode, also called distributed mode, opens an unauthenticated ZeroMQ ROUTER so worker processes can register and share KV cache blocks. Messages on that socket are msgpack. Extension code 1 is passed to DeviceIPCWrapper.Deserialize, which calls pickle.loads, while the server is still decoding request arguments and before the handler runs. A single unauthenticated ZMQ DEALER message to the transport port (default 5555) therefore executes code as the user the LMCache process runs as. Official container images run that process as root. The transport binds to localhost unless the operator sets a routable address with --host, which is how multi-node deployments let peers connect.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
LMCache · LMCacheRelated CVEs — LMCache
In the same product, most dangerous first.
CVE-2026-107207MEDIUMLMCache through 0.5.5 Missing Authentication in Frontend Node Catalog Allows SSRF Allowlist BypassEPSS —CVE-2026-107206HIGHLMCache through 0.5.5 Missing Authentication in MP HTTP Server Management APIEPSS —CVE-2026-107205HIGHLMCache through 0.5.5 Missing Authentication in MP Coordinator Fleet Control APIEPSS —CVE-2026-107204CRITICALLMCache through 0.5.5 Unauthenticated RCE via /run_script EndpointEPSS —