CVE-2026-103270
LightLLM through 1.2.0 Missing Authentication on RL Control Routes
ModelTC LightLLM
CVSS
8.7HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 30 Sep 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.51%Chance of exploitation activity in the next 30 days, higher than 42% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- LightLLMaffected: all versions through 1.2.0CVE List
References 5
- vulncheck.com/advisories/lightllm-through-1.2.0-missing-authentication-on-rl-control-routesAdvisoryvia CVE List
- github.com/ModelTC/LightLLM/issues/1609Exploitvia CVE List
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http.py#L505-L507Referencevia CVE List
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http_rl.py#L51-L139Referencevia CVE List
- github.com/ModelTC/LightLLMReferencevia CVE List