LMCache through 0.5.5 contains a missing authentication vulnerability in the multiprocess mode HTTP server that allows remote unauthenticated attackers to access management endpoints listening on all interfaces by default. Attackers can read environment credentials via GET /env and configuration via GET /config, clear caches, delete cache objects, and modify tenant quotas to evict other tenants' cached data.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
Low
Partial data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://github.com/LMCache/LMCache
disclosure@vulncheck.com
https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/internal_api_server/c…
disclosure@vulncheck.com
https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/multiprocess/config.p…
disclosure@vulncheck.com
https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/multiprocess/http_api…
disclosure@vulncheck.com
https://github.com/LMCache/LMCache/issues/5511
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/lmcache-through-0.5.5-missing-authenticati…
disclosure@vulncheck.com