LightLLM through 1.2.0 Missing Authentication in PD Master /pd_register WebSocket Endpoint
LightLLM through 1.2.0 contains an authentication bypass vulnerability in the /pd_register WebSocket endpoint that allows unauthenticated attackers to register arbitrary nodes by supplying crafted JSON without peer address validation. Attackers can disclose full user prompts routed to their socket, trigger denial of service by replacing legitimate nodes, or make the PD Master issue requests to internal network addresses.
CVE-2026-93839
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-2026-93839
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-2026-93839
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #1713 · Revision 1
- Added to Heist Feed
- Publisher date