CVE-2026-103042

{
  "etk_id": "ETK-2026-36",
  "cve_id": "CVE-2026-103042",
  "display_id": "CVE-2026-103042",
  "ghsa_id": "GHSA-mqxw-j6vh-r94f",
  "euvd_id": "EUVD-2026-89483",
  "status": "published",
  "anchor_state": "anchored",
  "title": "NCCL control-channel memory exhaustion in LightLLM",
  "summary": "LightLLM through version 1.2.0 is affected when it is launched with NCCL PD-transfer mode enabled. An unauthenticated remote party may consume unbounded memory in KV-transfer workers, causing worker crashes and potentially disrupting the node.",
  "mitigation": "Avoid enabling `--pd_trans_mode nccl` where unauthenticated network access is possible. Restrict access to the NCCL control channel to trusted hosts until an upstream fixed version is available.",
  "vendor": "ModelTC",
  "product": "LightLLM",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 1.2.0"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "LightLLM",
      "purl": null
    }
  ],
  "cwes": [
    770
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "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",
  "epss_score": 0.0052,
  "epss_percentile": 0.4302,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 12.64217885,
  "t0_at": "2026-09-29T22:51:01.631000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-29T22:51:01.631000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T22:51:01.631000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-103042"
    }
  }
}