CVE-2026-75110 (GCVE-0-2026-75110)

Vulnerability from cvelistv5 – Published: 2026-08-17 20:36 – Updated: 2026-09-24 14:19
VLAI
Title
MemOS Authentication Bypass via Unset INTERNAL_SERVICE_SECRET
Summary
MemOS is a memory operating system for LLMs and AI agents. In deployments where authentication is enabled (AUTH_ENABLED=true) but the undocumented, defaultless INTERNAL_SERVICE_SECRET environment variable is unset, the is_internal_request() check in src/memos/api/middleware/auth.py fails open: os.getenv("INTERNAL_SERVICE_SECRET") returns None and a request omitting the X-Internal-Service header also yields None, so the comparison None == None evaluates true. The request is then treated as a trusted internal principal and granted scopes: ["all"]. As a result, an unauthenticated remote attacker can reach the admin API-key management endpoints to mint API keys for any user, enumerate keys, revoke keys, and generate a master key for persistent privileged access, as well as all data endpoints.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 12:48 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6370 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
MemTensor MemOS Affected: 0 , ≤ 2.0.30 (custom)
guessed Create a notification for this product.
Date Public
2026-08-16 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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