CVE-2026-107205: Lmcache

High severity, CVSS 8.6. EPSS: 0.4% chance of exploitation in the next 30 days.

LMCache through 0.5.5 contains a missing authentication vulnerability in the multiprocess coordinator that allows remote unauthenticated attackers to access its HTTP fleet control API listening on all interfaces by default. Attackers can register or deregister instances via /instances, overwrite quotas via /quota endpoints, inject events via /events, and enumerate /directory/keys to disrupt caching and disclose placement metadata.

Affected products

• Lmcache Lmcache: up to and including 0.5.5

Published 2026-10-07. Last modified 2026-10-08.