Is CVE-2026-103042 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-103042?

CVE-2026-103042 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-103042

Description

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.