LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.4, the server defaults to CORS_ORIGINS=* combined with allow_credentials=True in lightrag/api/lightrag_server.py, causing Starlette CORSMiddleware to effectively whitelist every origin for credentialed cross-origin requests. Any malicious website visited by an authenticated LightRAG user can silently make authenticated API requests, exfiltrating documents and knowledge graph data or performing destructive actions such as deleting the document store. This vulnerability is fixed in 1.5.4.
CVE-2026-61736
“—” beside the score: it is equal to the CVSS score beside it.
Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-20. A secondary CVSS source baseline 9.3; sources differ by 0.0.
Also known asEUVD-2026-44670 (ENISA EUVD) · GHSA-6x6h-qqr7-855w (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 9.3
- EG Score
- 9.3CRITICALmedium confidence
- EG Risk
- 42EG Risk 42/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity93% × 45%Impact severity (EG Severity): CVSS 9.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation1.4% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 1.4%
- EPSS %ILE
- 72nd
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (9.3): severity, escalated by confirmed exploitation. This CVE's 9.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 9.3 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 1.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
July 15, 2026
Last Modified
October 24, 2026
Advisory Details (6)
Auto-updated Oct 8, 2026CORS Wildcard + Credentials Enables Any-Origin Credentialed Requests · Advisory · HKUDS/LightRAG · GitHub
https://github.com/HKUDS/LightRAG/security/advisories/GHSA-6x6h-qqr7-855wv1.5.4
Patch available: HKUDS/LightRAG v1.5.4
https://github.com/HKUDS/LightRAG/releases/tag/v1.5.4fix(api): don't pair wildcard CORS origin with credentials
Patch available: HKUDS/LightRAG v1.5.4 (PR #3317 merged 2026-06-24)
https://github.com/HKUDS/LightRAG/pull/3317commit ebba6548639c (HKUDS/LightRAG)
Patch available: HKUDS/LightRAG v1.5.4 (contains commit ebba6548639c)
https://github.com/HKUDS/LightRAG/commit/ebba6548639c0f2e8919100eff76b401f1222252commit df68d75f9dc2 (HKUDS/LightRAG)
Patch available: HKUDS/LightRAG v1.5.4 (contains commit df68d75f9dc2)
https://github.com/HKUDS/LightRAG/commit/df68d75f9dc29dd340ffb6794b48f48c4fdc9a2dcommit 09567a4c983f (HKUDS/LightRAG)
Patch available: HKUDS/LightRAG v1.5.4 (contains commit 09567a4c983f)
https://github.com/HKUDS/LightRAG/commit/09567a4c983f580050db63569dd477122c058c3dVendor Advisories for CVE-2026-61736(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| pip | lightrag-hku @ 1.5.4 (fixes <= 1.5.3) | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| lightrag-hku | 0.0.2 ... 1.5.3 (87 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 16× in last 7d / 57× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 100 of 173 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 73 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 18:33 UTCEG score recompute
- 2026-11-01 18:33 UTCGHSA enrichmentGHSA-6x6h-qqr7-855w · GitHub severity CRITICAL · GitHub CVSS 9.3
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-11-01 07:41 UTCGHSA enrichmentGHSA-6x6h-qqr7-855w · GitHub severity CRITICAL · GitHub CVSS 9.3
- 2026-11-01 07:41 UTCEG score recompute
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-30 16:34 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-28 16:32 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-10-28 09:07 UTCEG score recompute
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-26 16:32 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-24 16:33 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-23 16:32 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-10-23 09:26 UTCEG score recompute
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- 2026-10-22 07:07 UTCEG score recompute
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-20 16:33 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-19 16:32 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-18 16:32 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-17 16:35 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-16 16:43 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-15 16:32 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-10-14 11:02 UTCEG score recompute
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-10-13 08:43 UTCEG score recompute
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-11 19:34 UTCEG score recompute
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- 2026-10-11 13:49 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
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- 2026-10-01 12:41 UTCEG score recompute
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 1.4% · 71st percentile
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- 2026-09-28 08:46 UTCEG score recompute
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 1.4% · 71st percentile
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- 2026-09-20 20:16 UTCEPSS rescoreEPSS 1.4% · 71st percentile
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- 2026-09-18 04:46 UTCEG score recompute
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 1.4% · 71st percentile
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- 2026-09-13 23:13 UTCEG score recompute
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- 2026-09-11 21:46 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
- 2026-09-08 00:56 UTCEG score recompute
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
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- 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
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Public detection templates
(1 reference)A public Nuclei detection template is referenced for this CVE. A detection template checks whether a system is affected; it is not necessarily exploit code.
- Nucleihttp/cves/2026/CVE-2026-61736.yamlPublished Sep 14, 2026
LightRAG <= 1.5.3 - Credentialed CORS Wildcard
Open source ↗
Related CVEs(same product + same CWE)
Same product
8 shownPyPI:lightrag-hku
Frequently asked(5)
What is CVE-2026-61736?
When was the CVE record for CVE-2026-61736 published?
Is CVE-2026-61736 actively exploited?
What is the CVSS score of CVE-2026-61736?
How do I remediate CVE-2026-61736?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-61736
Is Your Infrastructure Affected by CVE-2026-61736?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.