CVE-2026-85734LightRAG: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks
Updated under an hour ago ()
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It affects HKUDS LightRAG. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-307
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
HKUDS LightRAG hkuds:lightrag (from the name) | before 1.5.5 | CNA record |
References
- https://github.com/HKUDS/LightRAG/security/advisories/GHSA-frch-4w6v-q5xxx-refsource-confirm
- https://github.com/HKUDS/LightRAG/pull/3424x-refsource-misc
- https://github.com/HKUDS/LightRAG/commit/135bc9056e9ecd800c1abe2f2ce24d1a86622a54x-refsource-misc
- https://github.com/HKUDS/LightRAG/releases/tag/v1.5.5x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.