Description
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.
Published: 2026-10-20
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Letta-ai
Letta-ai letta
Vendors & Products Letta-ai
Letta-ai letta

Tue, 20 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 01:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Letta through 0.16.8 Credential Exposure via Tool Sandbox Environment Inheritance
First Time appeared Letta
Letta letta
Weaknesses CWE-526
CPEs cpe:2.3:a:letta:letta:*:*:*:*:*:*:*:*
Vendors & Products Letta
Letta letta
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-20T13:47:53.481Z

Reserved: 2026-08-21T17:52:36.080Z

Link: CVE-2026-77938

cve-icon Vulnrichment

Updated: 2026-10-20T13:47:49.059Z

cve-icon NVD

Status : Deferred

Published: 2026-10-20T01:17:20.410

Modified: 2026-10-20T20:11:29.833

Link: CVE-2026-77938

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-21T16:46:44Z

Weaknesses