{"cve":"CVE-2026-85734","nvd":{"published":"2026-09-22T17:17:27.367","modified":"2026-09-22T18:17:23.530","status":"Deferred","description":"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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-307"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-85734","score":0.00609,"percentile":0.49193,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-frch-4w6v-q5xx","url":"https://osv.dev/vulnerability/GHSA-frch-4w6v-q5xx","summary":"lightrag-hku: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks","modified":"2026-10-01T17:56:08.809898136Z","packages":[{"ecosystem":"PyPI","name":"lightrag-hku","purl":"pkg:pypi/lightrag-hku","ranges":["<1.5.5"],"fixed":["1.5.5"]}]},{"id":"PYSEC-2026-4062","url":"https://osv.dev/vulnerability/PYSEC-2026-4062","summary":"lightrag-hku: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks","modified":"2026-10-01T17:45:05.547308424Z","packages":[{"ecosystem":"PyPI","name":"lightrag-hku","purl":"pkg:pypi/lightrag-hku","ranges":["<1.5.5"],"fixed":["1.5.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}