CVE-2026-85709
Deferred Deferred - Pending Action

Information Disclosure in LightRAG API Server

Vulnerability report for CVE-2026-85709, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-22

Last updated on: 2026-09-22

Assigner: GitHub, Inc.

Description

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, the LightRAG API server returns raw Python exception text from error handlers in document_routes.py, graph_routes.py, query_routes.py, ollama_api.py, and lightrag_server.py. The detail=str(e), detail=str(exc), and equivalent formatted-message paths expose server filesystem paths, database host, port, user, and database names, language-model provider diagnostics, configuration details, and Python library internals to a network client that can trigger an error. The default unauthenticated configuration makes those responses reachable without credentials, and URI-configured backends can disclose connection strings containing credentials depending on the underlying driver error. This issue is fixed in version 1.5.5.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-09-22
Last Modified
2026-09-22
Generated
2026-09-22
AI Q&A
2026-09-22
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
hkuds lightrag to 1.5.5 (exc)
lightrag lightrag to 1.5.5 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-209 The product generates an error message that includes sensitive information about its environment, users, or associated data.

Attack-Flow Graph

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Detection Guidance

Check LightRAG API server responses for HTTP 500 or 422 errors containing sensitive details like filesystem paths, database credentials, or Python stack traces. Monitor server logs for unhandled exceptions being logged server-side.

Mitigation Strategies

Upgrade LightRAG to version 1.5.5 or later. Ensure all error handlers use sanitized responses and implement a global exception handler to prevent raw exception leakage. Review server logs for past exposure of sensitive data.

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