CVE-2026-61808
CriticalPublic exploitLightRAG provides simple and fast retrieval-augmented generation.
Published Aug 7, 2026 · Updated Sep 11, 2026 · Also known as EUVD-2026-54644, GHSA-mmg5-8x8q-v934
Key Facts
Patch immediately- CVE-2026-61808 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting LightRAG.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 2.5% probability of exploitation in the next 30 days.
- Fixed versions are available, including LightRAG 1.5.5rc1.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
2.5%
Higher than 84.4% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-61808 brief as a PDF
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Description
LightRAG provides simple and fast retrieval-augmented generation. Through version 1.5.4, the LightRAG API server binds to all network interfaces with authentication disabled by default, allowing an unauthenticated network attacker to read indexed document content, upload or delete documents, modify the knowledge graph, cancel pipelines, clear caches, and consume LLM resources. This issue is mitigated in version 1.5.5rc1.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| LightRAG | >= < 1.5.5rc1 | 1.5.5rc1 |
Patched Releases
LightRAG
1.5.5rc1
Timeline
Publicly disclosed
Aug 7, 2026
Last updated
Sep 11, 2026
Weakness Type
- CWE-306 Missing Authentication for Critical Function
References
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61808.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2026-61808
- otherhttps://github.com/HKUDS/LightRAG/commit/0bd102401b4b28a02664e5b6af476bf7a4470292
- otherhttps://github.com/HKUDS/LightRAG/security/advisories/GHSA-mmg5-8x8q-v934
FAQ
Common Questions.
LightRAG provides simple and fast retrieval-augmented generation.
Affected: LightRAG versions >= < 1.5.5rc1. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including LightRAG 1.5.5rc1.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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