CVE-2026-85734

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, the POST /login endpoint in lightrag/api/lightrag_server.py does not impose a rate limit, account lockout, delay, or counter for failed authentication attempts. A network attacker can submit password guesses at full request speed until a valid account password is found. Successful credential recovery grants authenticated access to documents, the knowledge graph, and administrative operations. This issue is fixed in version 1.5.5.

• CWE-307

• https://github.com/HKUDS/LightRAG/commit/135bc9056e9ecd800c1abe2f2ce24d1a86622a54
• https://github.com/HKUDS/LightRAG/pull/3424
• https://github.com/HKUDS/LightRAG/releases/tag/v1.5.5
• https://github.com/HKUDS/LightRAG/security/advisories/GHSA-frch-4w6v-q5xx

Published

Sep 22, 2026

Last Modified

Sep 22, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-85726Chartbrew is an open-source web application that can connect…7.5
• CVE-2026-8573Integer overflow in Codecs in Google Chrome on Windows prior…8.3
• CVE-2026-85730smol-toml is a small, fast, and correct TOML parser and seri…8.2
• CVE-2026-85731oras-go is a Go library for managing OCI artifacts. Prior to…8.8
• CVE-2026-85732oras-go is a Go library for managing OCI artifacts. Prior to…4.7
• CVE-2026-85733FrankenPHP is a modern application server for PHP. Prior to …5.3
• CVE-2026-85736Chartbrew is an open-source web application that can connect…8.1
• CVE-2026-85737Velociraptor is a tool for collecting host-based state infor…6.5
• CVE-2026-85738TREK is a collaborative travel planner. Prior to 3.4.0, the …6.3
• CVE-2026-8574Use after free in Core in Google Chrome on Windows prior to …8.3
• CVE-2026-85740LightRAG provides simple and fast retrieval-augmented genera…7.1
• CVE-2026-85742FreeScout is a self-hosted help desk and shared mailbox. Pri…7.5