CVE-2026-103270
7.5 HIGHpublic exploit availablePublished 2026-09-30 · Updated 2026-09-30
AI risk analysis
- Summary
- LightLLM 1.2.0 and earlier allows unauthenticated access to critical reinforcement learning control endpoints that can halt inference operations and wedge workers, enabling disruption of AI model serving without any authentication.
- Exploitability
- Easy to exploit with no preconditions; attackers only need to send HTTP requests to the exposed control endpoints like /pause_generation or /abort_request to disrupt services.
- Blast radius
- Affects deployments using --enable_rl flag where attackers can halt inference operations, potentially causing service disruption and resource exhaustion across multiple workers in a LightLLM deployment.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Upgrade to 1.2.1 or later to receive the fix for authentication checks on reinforcement learning control routes.
recondenial-of-serviceweb
Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.
NVD description
LightLLM through 1.2.0 mounts reinforcement learning control routes on the public HTTP API without authentication checks. Unauthenticated attackers can call endpoints like /pause_generation, /abort_request, /flush_cache, and /init_weights_update_group to disrupt inference operations and wedge workers on deployments started with --enable_rl.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-306
Public exploit & PoC references
- https://github.com/ModelTC/LightLLM
- https://github.com/ModelTC/LightLLM/issues/1609
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http.py#L505-L507
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http_rl.py#L51-L139
- https://github.com/ModelTC/LightLLM/issues/1609
All references
- https://github.com/ModelTC/LightLLM
- https://github.com/ModelTC/LightLLM/issues/1609
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http.py#L505-L507
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http_rl.py#L51-L139
- https://www.vulncheck.com/advisories/lightllm-through-1.2.0-missing-authentication-on-rl-control-routes
- https://github.com/ModelTC/LightLLM/issues/1609
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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