CVE-2026-61808 LightRAG: Missing Authentication for Critical API Functions in Default Configuration
Unauthenticated attackers can read, modify, and delete data in LightRAG due to disabled authentication in the default configuration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-61808?
CVE-2026-61808 is a critical missing authorization vulnerability in HKUDS LightRAG, published on 7 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-61808?
How do I fix CVE-2026-61808?
No fix has been published for CVE-2026-61808 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-61808 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-61808 exists.
Public exploit code: 1 Nuclei template.
Sources
Also known as GHSA-mmg5-8x8q-v934.