LMCache through 0.5.5 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute Python code by posting scripts to the /run_script endpoint. Attackers can recover real builtins through the injected FastAPI app object, bypassing the guarded __import__, to import os and run operating system commands as the LMCache process.
History

Wed, 07 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Lmcache
Lmcache lmcache
Vendors & Products Lmcache
Lmcache lmcache

Wed, 07 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Description LMCache through 0.5.5 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute Python code by posting scripts to the /run_script endpoint. Attackers can recover real builtins through the injected FastAPI app object, bypassing the guarded __import__, to import os and run operating system commands as the LMCache process.
Title LMCache through 0.5.5 Unauthenticated RCE via /run_script Endpoint
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-07T15:24:03.214Z

Updated: 2026-10-07T17:09:21.989Z

Reserved: 2026-10-07T14:31:44.218Z

Link: CVE-2026-107204

cve-icon Vulnrichment

Updated: 2026-10-07T17:09:12.623Z

cve-icon NVD

Status : Deferred

Published: 2026-10-07T16:17:45.113

Modified: 2026-10-08T21:07:19.997

Link: CVE-2026-107204

cve-icon Redhat

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