{"id":"CVE-2026-107205","published":"2026-10-07T16:17:45.283","lastModified":"2026-10-08T21:07:19.997","description":"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.","cvssScore":8.6,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","cwes":["CWE-306"],"vendors":[],"products":[],"references":[{"url":"https://github.com/LMCache/LMCache","tags":[]},{"url":"https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/mp_coordinator/app.py#L238-L246","tags":[]},{"url":"https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/mp_coordinator/config.py#L71","tags":[]},{"url":"https://github.com/LMCache/LMCache/issues/5508","tags":[]},{"url":"https://www.vulncheck.com/advisories/lmcache-through-0.5.5-missing-authentication-in-mp-coordinator-fleet-control-api","tags":[]}],"exploitRefs":[{"url":"https://github.com/LMCache/LMCache","tags":[]},{"url":"https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/mp_coordinator/app.py#L238-L246","tags":[]},{"url":"https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/mp_coordinator/config.py#L71","tags":[]},{"url":"https://github.com/LMCache/LMCache/issues/5508","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw is a missing authentication vulnerability in the multiprocess coordinator of LMCache, allowing unauthenticated attackers to access and manipulate the HTTP fleet control API. This can lead to disruption of caching and disclosure of placement metadata.","exploitability":"Exploitation is relatively straightforward as the API listens on all interfaces by default, requiring no specific user interaction other than network access.","blast_radius":"If exploited, the impact could be significant, including disruption of services and potential disclosure of sensitive metadata.","remediation":"Upgrade to LMCache 0.5.6 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","api","web"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-09T08:44:44.017Z"}}