CVE-2026-77938 — Letta through 0.16.8 Credential Exposure via Tool Sandbox Environment Inheritance
Letta through 0.16.8 contains an information disclosure vulnerability that allows users running tools to read server secrets because LocalSandbox subprocesses inherit the full s…
Published: 2026-10-20 · CVSS: 7.1 · CVSS 4.0
Letta through 0.16.8 contains an information disclosure vulnerability that allows users running tools to read server secrets because LocalSandbox subprocesses inherit the full server environment. Attackers can run code via POST /v1/tools/run or custom tools to read LETTA_PG_URI, POSTGRES_PASSWORD, and provider API keys, then access cross-tenant database data.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7