CVE-2026-85709

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 64% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
5.3
EG Score
5.3(medium)
EG Risk
55(Attend)
EG Risk 55/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

September 22, 2026

Last Modified

September 22, 2026

Advisory Details (5)

Auto-updated Sep 22, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github, github_pr.
github_release Patch Available

v1.5.5

Patch available: HKUDS/LightRAG v1.5.5

https://github.com/HKUDS/LightRAG/releases/tag/v1.5.5
github_commit Patch Available

commit dcab315d7dc1 (HKUDS/LightRAG)

Patch available: HKUDS/LightRAG v1.5.5 (contains commit dcab315d7dc1)

https://github.com/HKUDS/LightRAG/commit/dcab315d7dc1eea682e9b2c4fcb1b06474484c47
github_commit Patch Available

commit 4d90a0eb35d4 (HKUDS/LightRAG)

Patch available: HKUDS/LightRAG v1.5.5 (contains commit 4d90a0eb35d4)

https://github.com/HKUDS/LightRAG/commit/4d90a0eb35d40b45f3a9045e308ec126897a3364
github_pr Patch Available

fix(api): Stop Leaking Raw Exception Text Through Raw Exception Messages in API Error Responses (CWE-209)

Patch available: HKUDS/LightRAG v1.5.5 (PR #3422 merged 2026-07-18)

https://github.com/HKUDS/LightRAG/pull/3422
github Patch Available🟡 PoC Available

Sensitive Information Exposure Through Raw Exception Messages in API Error Responses · Advisory · HKUDS/LightRAG · GitHub

https://github.com/HKUDS/LightRAG/security/advisories/GHSA-hrmj-7rvj-4hg8

Vendor Advisories for CVE-2026-85709(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-23 21:12 UTCEG score recompute
  2. 2026-09-23 17:54 UTCEPSS rescore
  3. 2026-09-22 19:38 UTCEG score recompute
  4. 2026-09-22 18:33 UTCEG score recompute
  5. 2026-09-22 17:36 UTCEG score recompute
  6. 2026-09-22 16:25 UTCEG score recompute
  7. 2026-09-22 16:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85709?
CVE-2026-85709 is a medium vulnerability published on September 22, 2026. 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 documentroutes.py, graphroutes.py, queryroutes.py, ollamaapi.py, and lightrag_server.py. The detail=str(e), detail=str(exc), and…
When was CVE-2026-85709 disclosed?
CVE-2026-85709 was first published in the National Vulnerability Database on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85709 actively exploited?
CVE-2026-85709 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 64.1% of all scored CVEs.
What is the CVSS score of CVE-2026-85709?
CVE-2026-85709 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-85709?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85709, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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