CVE-2026-85734 LightRAG - Authentication Bypass

LightRAG < 1.5.5 contains a broken authentication caused by lack of rate limiting and account lockout on POST /login endpoint, letting network attackers perform brute force attacks to gain authenticated access, exploit requires network access.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.36% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-307

Vendor fix

Update to version 1.5.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs