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CVE-2026-75110— MemOS Authentication Bypass via Unset INTERNAL_SERVICE_SECRET

CVSS 9.8 · Critical EPSS 0.52% · P42

Possible ATT&CK Techniques 1AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProductVersion RangeStatus
MemTensorMemOS≤ 2.0.30affected
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I. Basic Information for CVE-2026-75110

Vulnerability Information
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Vulnerability Title
MemOS Authentication Bypass via Unset INTERNAL_SERVICE_SECRET
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的比较
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
MemTensorMemOS 0 ~ 2.0.30 -

II. Public POCs for CVE-2026-75110

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 13331 chars
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III. Intelligence Information for CVE-2026-75110

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Vendor Advisories for CVE-2026-75110 (1)

News Coverage for CVE-2026-75110 (1)

IV. Related Vulnerabilities

Same product: MemOS
Same weakness: CWE-697

V. Comments for CVE-2026-75110

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