Live Exposure Defense: From CVE to Confirmed Exposure in 12 Hours – See more

Back
New CVE Detected

CVE-2026-61808 – Missing Authentication (Unauthenticated API Access) – LightRAG before 1.5.5rc1

Be the first to know when new zero-days emerge:

Subscribe to Email Alerts
Subscribe to RSS Feed

Summary

CVE-2026-61808 is a critical missing-authentication vulnerability (CWE-306) in HKUDS LightRAG, a retrieval-augmented generation tool. By default the LightRAG API server binds to all network interfaces with authentication disabled, allowing an unauthenticated remote attacker to reach sensitive API endpoints. It carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: The LightRAG API server binds to all network interfaces with authentication disabled by default; authentication checks are skipped when neither AUTH_ACCOUNTS nor LIGHTRAG_API_KEY is configured.
  • Trigger conditions: A LightRAG instance running in its default configuration and reachable over the network, with no API key or account credentials set.
  • Attack vector: Network — no authentication, no privileges, and no user interaction are required to reach the exposed endpoints.
  • Impact: Unauthenticated attackers can access indexed documents, manipulate knowledge graphs, manage pipelines, and exploit LLM resources, resulting in loss of confidentiality, integrity, and availability.

Affected software

  • HKUDS LightRAG: all versions prior to 1.5.5rc1

Severity

  • CVSS v3.1 base score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade to LightRAG 1.5.5rc1 or later.
  • If no patch can be applied: Configure authentication by setting LIGHTRAG_API_KEY or AUTH_ACCOUNTS, bind the server to loopback only (HOST=127.0.0.1) instead of all interfaces, and restrict network access to the API server so it is not exposed to untrusted networks.

References

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report

How IONIX’s External Exposure Management Platform Detects and Validates
Zero-Days to Shrink MTTR

1

Map your entire attack surface (continously)

IONIX uses multi-factor discovery methods, including DNS analysis, certificate mapping, metadata inspection, and more, to automatically map every internet-facing asset across your environment. This includes cloud instances, third-party platforms, shadow IT, and even forgotten infrastructure that traditional tools miss.

2

Monitor for new CVEs

Dozens of threat intel feeds using agentic technology are continuously analyzed to detect the appearance of proof-of-concept code, exploit kits, and indicators of active targeting. IONIX goes further by applying AI to proactively evaluate whether emerging vulnerabilities are likely to be exploited, even before PoCs go public.

3

Identify Potential External Exposures

Not all CVEs matter. IONIX filters vulnerabilities by asking attacker-centric questions: Can it be reached from the internet? Does it require authentication? Is it being exploited in the wild? This dramatically reduces noise and focuses teams on threats that can actually be weaponized.

4

Create Safe, Scalable Exploit Validations

IONIX transforms real-world PoCs into safe, non-intrusive test payloads that can be run in production environments without disruption. These simulations are precisely targeted to the systems that are vulnerable, ensuring rapid validation without unnecessary load.

5

Execute Exploit Validations

By combining context about software stack, versioning, exposure status, and reachability, IONIX ensures that only the right payloads are executed against the right assets, maximizing efficiency and minimizing risk.

6

Drive Fast and Actionable Remediation

Results are routed through integrations with ticketing, SOAR, and SIEM tools. Issues are written in plain language, bundled into remediation clusters, and prioritized based on asset criticality, exploitability, and blast radius. This shortens mean time to remediation (MTTR) and empowers teams to act with confidence.

Are you exposed?

Get a free report of your organization’s exposure to this CVE and threat

  • Mapping of all Assets with this Technology
  • Identification of potentially exposed assets to this CVE
  • Confirmation of verified exploitable assets
Get Exposure Report
Close

Subscribe to Threat Center RSS

Copy/paste the link below into your preferred RSS reader or follow these instructions to subscribe to Slack alerts.

Open RSS feedSlack setup instructions

Close

Get Real-Time CVE Alerts to Your Email

Be the first to know when new zero-days emerge