CVE-2026-77938

6.5 Moyenne

Publiée le 20/10/2026 à 03:17 · Modifiée le 20/10/2026 à 22:11 · Analyse NVD reportée · Source : disclosure@vulncheck.com

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.

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Produits concernés

letta-ai letta

Scores CVSS

Version	Score	Source	Vecteur
4.0	7.1 Élevée	disclosure@vulncheck.com	`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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X`
3.1	6.5 Moyenne	disclosure@vulncheck.com	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`

Faiblesses (CWE)

CWE-526

Références

https://github.com/letta-ai/letta/blob/1131535716e8a31c9a437f8695e25ac98f203a24/letta/services/tool_sandbox/base.py#L487
https://www.lasso.security/vulnerability-database/cve-2026-77938
https://www.vulncheck.com/advisories/letta-through-0.16.8-credential-exposure-via-tool-sandbox-environment-inheritance

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories