CVE-2026-103270
LightLLM through 1.2.0 Missing Authentication on RL Control Routes
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 30, 2026
- Updated
- Sep 30, 2026
- Reserved
- Sep 30, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-306 Missing Authentication for Critical Function
Affected Products
| Product | Versions |
|---|---|
LightLLMModelTC |
|
References
- GitHub Issue #1609issue-tracking
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http.py#L505-L507technical-description
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http_rl.py#L51-L139technical-description
- https://github.com/ModelTC/LightLLMproduct
- VulnCheck Advisory: LightLLM through 1.2.0 Missing Authentication on RL Control Routesthird-party-advisory
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