Permissive Cross-domain Policy with Untrusted Domains Affecting mcp-memory-service package, versions [,10.25.1)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published12 Mar 2026
- disclosed7 Mar 2026
- credityotampe-pluto
Introduced: 7 Mar 2026
CVE-2026-33010 (opens in a new tab)How to fix?
Upgrade mcp-memory-service to version 10.25.1 or higher.
Overview
mcp-memory-service is an Open-source persistent memory for AI agent pipelines and Claude. REST API + semantic search + knowledge graph + autonomous consolidation. Self-host, zero cloud cost.
Affected versions of this package are vulnerable to Permissive Cross-domain Policy with Untrusted Domains via the create_app CORSMiddleware setup in src/mcp_memory_service/web/app.py that defaults MCP_CORS_ORIGINS to wildcard origins and leaves allow_credentials enabled. An attacker can exfiltrate and tamper with all stored memory by hosting malicious JavaScript that issues cross-origin fetches, since the service responds with Access-Control-Allow-Origin: * and honors anonymous requests.