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TI-2026-25457 Aliases CVE-2026-33010GHSA-g9rg-8vq5-mpwm

mcp-memory-service's Wildcard CORS with Credentials Enables Cross-Origin Memory Theft

Priority HIGH 73CWE-942Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

mcp-memory-service is an open-source memory backend for multi-agent systems. Prior to version 10.25.1, when the HTTP server is enabled (MCP_HTTP_ENABLED=true), the application configures FastAPI's CORSMiddleware with allow_origins=['*'], allow_credentials=True, allow_methods=["*"], and allow_headers=["*"]. The wildcard Access-Control-Allow-Origin: * header permits any website to read API responses cross-origin. When combined with anonymous access (MCP_ALLOW_ANONYMOUS_ACCESS=true) - the simplest way to get the HTTP dashboard working without OAuth - no credentials are needed, so any malicious website can silently read, modify, and delete all stored memories. This issue has been patched in version 10.25.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00403 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed mcp-memory-service (doobidoo): 10.25.1mcp-memory-service (PyPI): 10.25.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
doobidoomcp-memory-servicebefore 10.25.110.25.1Patch availableCNA
—mcp-memory-service (PyPI)before 10.25.110.25.1Patch availableGHSA-g9rg-8vq5-mpwm
  • mcp-memory-service Vendordoobidoo Affected before 10.25.1 Fixed in 10.25.1 Patch available CNA
  • mcp-memory-service (PyPI) Vendor— Affected before 10.25.1 Fixed in 10.25.1 Patch available GHSA-g9rg-8vq5-mpwm

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:doobidoo:mcp-memory-service:*:*:*:*:*:*:*:*before 10.25.1Vulnerabledoobidoo
  • cpe:2.3:a:doobidoo:mcp-memory-service:*:*:*:*:*:*:*:* Versions before 10.25.1 Vulnerable ·doobidoo

Remediation

  • Fix · CNA mcp-memory-service (doobidoo) Fixed in 10.25.1
  • Fix · GHSA-g9rg-8vq5-mpwm mcp-memory-service (PyPI) Fixed in 10.25.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33010
  2. 2026-10-03 Alias added: GHSA-g9rg-8vq5-mpwm

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-23373 mcp-memory-service: System Information Disclosure via Health Endpoint CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences