LightLLM through 1.2.0 Unauthenticated Memory Exhaustion via NCCL Control Channel set_value
LightLLM through 1.2.0 contains a memory exhaustion vulnerability in the NCCL control channel when started with --pd_trans_mode nccl, allowing unauthenticated attackers to exhaust KV-transfer worker memory. Attackers can call the exposed_set_value method to store unbounded key-value pairs without size limits, causing the worker process to crash and triggering node failure.
CVE-2026-103042
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-103042
LightLLM
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/ModelTC/lightllm",
"vendor": "ModelTC",
"product": "LightLLM",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "1.2.0"
}
],
"packageURL": "pkg:github/ModelTC/lightllm",
"packageName": "LightLLM",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-103042
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #7903 · Revision 1
- Added to Heist Feed
- Publisher date