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CVE-2026-61808 is a missing-authentication vulnerability in HKUDS LightRAG affecting versions through 1.5.4. In the default configuration, the LightRAG API server listens on all network interfaces while authentication is disabled, exposing administrative and data-handling API functionality to unauthenticated remote users. A network attacker can interact directly with API endpoints to read indexed document content, upload or delete documents, modify the knowledge graph, cancel processing pipelines, clear caches, and trigger LLM-backed operations. The issue stems from insecure default exposure of critical API functions rather than a memory-corruption flaw or complex exploit chain.
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No public exploit code observed for this vulnerability.
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An unauthenticated default exposure issue in LightRAG where a default deployment/configuration appears to expose the /documents endpoint without requiring an API key until authentication settings are configured.
A critical missing authentication vulnerability in LightRAG's API server default configuration that allows unauthenticated remote attackers to access and manipulate data and consume LLM resources.
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.