๐Ÿ” CVE Alert

CVE-2026-18990

HIGH 7.3

letta-ai LettaBot API Status Route server.ts missing authentication

CVSS Score
7.3
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-306 CWE-287
Vendor letta-ai
Product lettabot
Published Aug 6, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

letta-ai / LettaBot
0.2.0

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
vuldb.com: https://vuldb.com/vuln/386359 vuldb.com: https://vuldb.com/vuln/386359/cti vuldb.com: https://vuldb.com/cve/CVE-2026-18990 vuldb.com: https://vuldb.com/submit/862562 vuldb.com: https://vuldb.com/submit/862622 gist.github.com: https://gist.github.com/YLChen-007/2ba2e586f3d16cb368c8dcd6ef680178

Credits

๐Ÿ” JohnChen (VulDB User) VulDB CNA Team