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Advisories

Letta through 0.16.8 Cross-Tenant Impersonation via user_id Header

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Severity
high
Date
Affecting

  • letta <= 0.16.8

CWE
  • CWE-639 Authorization Bypass Through User-Controlled Key
CVSS
8.6
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
Noy Pearl, Michael Sromin, Ophir Dror
Description
Letta through 0.16.8 contains an authentication bypass vulnerability that allows API callers to impersonate other users by supplying a self-asserted user_id HTTP header. Attackers can set user_id to another tenant's ID, even with LETTA_SERVER_SECURE enabled, to read and modify that user's agents, memory and configuration.

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