CVE-2026-18990: Letta-Ai Lettabot

High severity, CVSS 7.3. EPSS: 0.7% chance of exploitation in the next 30 days.

A vulnerability was detected in letta-ai LettaBot 0.2.0. Impacted is an unknown function of the file src/api/server.ts of the component API Status Route. The manipulation results in missing authentication. The attack may be performed from remote. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Letta-Ai Lettabot: version 0.2.0 only

Published 2026-08-06. Last modified 2026-08-12.