CVE-2026-18990: Missing Authentication in letta-ai LettaBot
CVE-2026-18990 is a medium severity vulnerability in letta-ai LettaBot version 0.2.0 where an API Status Route in src/api/server.ts lacks proper authentication. This allows remote attackers to access functionality without authentication. Exploit code is publicly available, but no official vendor response or patch has been provided.
AI Analysis
Technical Summary
The vulnerability in letta-ai LettaBot 0.2.0 involves missing authentication in an unspecified function within the API Status Route component (src/api/server.ts). This flaw enables remote attackers to bypass authentication controls. The issue has been publicly disclosed with exploit code available. The vendor was notified but has not issued any response or remediation guidance. No official patch or fix is currently documented.
Potential Impact
Remote attackers can exploit the missing authentication to access the affected API route without credentials, potentially leading to unauthorized information disclosure or manipulation depending on the API functionality. The CVSS 4.0 base score is 6.9 (medium severity), reflecting network attack vector, no privileges or user interaction required, and low to limited confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a fix, users should consider implementing compensating controls such as restricting network access to the API, adding external authentication proxies, or monitoring for suspicious access until an official patch is available.
CVE-2026-18990: Missing Authentication in letta-ai LettaBot
Description
CVE-2026-18990 is a medium severity vulnerability in letta-ai LettaBot version 0.2.0 where an API Status Route in src/api/server.ts lacks proper authentication. This allows remote attackers to access functionality without authentication. Exploit code is publicly available, but no official vendor response or patch has been provided.
CVSS v4.0
Score 6.9medium
Affected software
cpe:2.3:a:letta-ai:lettabot:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in letta-ai LettaBot 0.2.0 involves missing authentication in an unspecified function within the API Status Route component (src/api/server.ts). This flaw enables remote attackers to bypass authentication controls. The issue has been publicly disclosed with exploit code available. The vendor was notified but has not issued any response or remediation guidance. No official patch or fix is currently documented.
Potential Impact
Remote attackers can exploit the missing authentication to access the affected API route without credentials, potentially leading to unauthorized information disclosure or manipulation depending on the API functionality. The CVSS 4.0 base score is 6.9 (medium severity), reflecting network attack vector, no privileges or user interaction required, and low to limited confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since the vendor has not responded or released a fix, users should consider implementing compensating controls such as restricting network access to the API, adding external authentication proxies, or monitoring for suspicious access until an official patch is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-05T18:44:22.650Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a748377bf8831d539b8c69d
Added to database: 08/06/2026, 12:52:07 UTC
Last enriched: 08/06/2026, 12:52:44 UTC
Last updated: 08/06/2026, 13:17:44 UTC
Views: 5
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