EUVD-2026-89481
GHSA-c838-68vr-jxfw
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
Once the profiling service is running it is unauthenticated network-reachable pickle RCE (AV:N/AC:L/PR:N/UI:N, C/I/A:H); the non-default flag is a deployment gate not captured by base metrics, so AC stays L.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
LightLLM through 1.2.0 contains a remote code execution vulnerability in the router profiler service when started with --enable_profiling flag. The service exposes an unauthenticated RPyC server with pickle deserialization enabled, allowing attackers to execute arbitrary code by sending crafted serialized objects to the profiler command queue.
Articles & Coverage 1
AnalysisAI
Remote code execution in LightLLM through 1.2.0 allows unauthenticated attackers to run arbitrary code on the host when the server is launched with the --enable_profiling flag, because that flag starts a router profiler service that exposes an RPyC listener with pickle deserialization enabled and no authentication (CVSS 4.0 base 9.3; CWE-502). The flaw is not reachable in a default deployment since profiling must be explicitly enabled, but once it is on, any network-reachable attacker can push crafted serialized objects onto the profiler command queue and gain high-integrity, high-availability code execution without credentials or user interaction (PR:N/UI:N). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires LightLLM (version ≤1.2.0) to be started with the --enable_profiling flag, which activates the router profiler service; this flag is NOT enabled by default, so a stock deployment is not exposed via this path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-priority issue rather than an inflated CVSS score, but its real-world blast radius is gated by one deployment condition. … 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 or fixed version is identified in the available data, so the most effective immediate mitigation is to stop launching LightLLM with the --enable_profiling flag; this removes the unauthenticated RPyC listener entirely and eliminates the vulnerable attack surface, at the cost of losing profiler telemetry for that deployment. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all LightLLM deployments and immediately stop or restart any instance running LightLLM 1.2.0 or earlier with the --enable_profiling flag so the RPyC profiler listener is not active; if profiling must remain temporarily enabled, block all network access to the profiler/RPyC port at the host firewall and network perimeter and restrict access to trusted management networks only. …
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External POC / Exploit Code
Leaving vuln.today