HIGH 7.1 NVD
CVE-2026-77938
Letta through 0.16.8 contains an information disclosure vulnerability that allows users running tools to read server secrets because LocalSandbox subprocesses i
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.
References
- https://github.com/letta-ai/letta/blob/1131535716e8a31c9a437f8695e25ac98f203a24/letta/serv
- https://www.lasso.security/vulnerability-database/cve-2026-77938
- https://www.vulncheck.com/advisories/letta-through-0.16.8-credential-exposure-via-tool-san
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-10-20 via NVD.
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