CVE-2026-85709Public exploitNetwork attack vectorHinoki check available

Information disclosure via raw API exception messages

Published Sep 22, 2026 · Updated Sep 22, 2026

Information exposure in LightRAG before 1.5.5 allows remote attackers to read server details through crafted API requests. Error handlers in document_routes.py, graph_routes.py, query_routes.py, ollama_api.py, and lightrag_server.py place raw exception text in HTTP response detail fields. The default unauthenticated server configuration exposes paths, database connection metadata, provider diagnostics, and library internals to any network client that can trigger an error.

CVSS severity5.3
Medium
EPSS probability0.39%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Information exposure in LightRAG before 1.5.5 allows remote attackers to read server details through crafted API requests. Error handlers in document_routes.py, graph_routes.py, query_routes.py, ollama_api.py, and lightrag_server.py place raw exception text in HTTP response detail fields. The default unauthenticated server configuration exposes paths, database connection metadata, provider diagnostics, and library internals to any network client that can trigger an error.

The record

CVE
CVE-2026-85709
Published
Sep 22, 2026
Updated
Sep 22, 2026
Vendor
Data Intelligence Lab @ HKU
Product
LightRAG
Classifications
CWE-209, T1592.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.5.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Data Intelligence Lab @ HKU · LightRAGversion=< 1.5.5

Published CVSS scores

5.3GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
T1592.002Gather Victim Host Information: Software

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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