EUVD-2026-89482
GHSA-3cfg-rxhx-vc58
Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Remote, unauthenticated, low-complexity pickle RCE with no user interaction yields full C/I/A impact; scope unchanged as code runs within the service's own privileges.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
LightLLM through 1.2.0 multimodal deployments expose an unauthenticated RPyC cache service with pickle deserialization enabled on all interfaces. Attackers can send crafted serialized objects to exposed cache methods to execute arbitrary code with service privileges.
Articles & Coverage 1
AnalysisAI
Unauthenticated remote code execution affects ModelTC LightLLM through version 1.2.0 when it is run in a multimodal deployment configuration, which starts an embed-cache RPyC service bound to all network interfaces with pickle deserialization enabled. Because the service performs no authentication and accepts attacker-controlled serialized objects through its exposed cache methods, any remote party that can reach the RPyC port can execute arbitrary code with the privileges of the LightLLM service (CVSS 4.0 base score 9.3; AV:N/AC:L/AT:N/PR:N/UI:N with high confidentiality, integrity, and availability impact). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires the target to run LightLLM (through 1.2.0) in a multimodal deployment mode, which starts the embed-cache RPyC service; that service listens on all interfaces with no authentication and has pickle deserialization enabled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-priority issue, not an inflated high-CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis, and the CPE still enumerates the entire LightLLM release line as affected, so remediation must be configuration- and network-driven until an upstream fix lands; monitor https://github.com/ModelTC/LightLLM and issue #1596 for a patched release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, determine which LightLLM instances (through version 1.2.0) are running in multimodal deployment configuration and therefore have the embed-cache RPyC service enabled, and identify the exact host and port each one listens on; for every confirmed instance, immediately block inbound access to that RPyC port at the host firewall and any perimeter or cloud security group so only trusted management networks can reach it, and where feasible restart the service with the port bound to loopback or disable the embed-cache service entirely. …
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External POC / Exploit Code
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