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CVE-2026-103042 is an uncontrolled resource-allocation vulnerability in LightLLM through version 1.2.0. In deployments started with the --pd_trans_mode nccl option, the NCCL control channel exposes the exposed_set_value method without authentication and without limits on stored key-value-pair size or quantity. An attacker can repeatedly store values until the KV-transfer worker exhausts memory, crashes, and causes node failure.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
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High-severity unauthenticated denial-of-service vulnerability in LightLLM's NCCL control channel caused by unbounded resource allocation.
An unauthenticated memory-exhaustion denial-of-service vulnerability in LightLLM through version 1.2.0. In NCCL transfer mode, an attacker can invoke exposed_set_value to create unbounded key-value pairs, exhausting KV-transfer worker memory, crashing the worker, and causing node failure.
An unauthenticated, network-reachable memory-exhaustion denial-of-service vulnerability in LightLLM through version 1.2.0. When LightLLM is configured with --pd_trans_mode nccl, an attacker can invoke exposed_set_value over the NCCL control channel to store unbounded key-value pairs, exhausting KV-transfer worker memory and causing worker crashes and node failure.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.