Vulnerability Description
Context7 through 2.1.2 contains a prompt injection vulnerability that allows attackers to execute malicious instructions in connected AI coding agents by injecting unsanitized content through the Custom AI Instructions feature served via the MCP server. Attackers can poison the custom instructions to exfiltrate credentials from environment files to an attacker-controlled service and perform destructive file deletion on the victim's machine when the agent makes a routine library documentation request.
CVSS Score
CRITICAL
References
- https://noma.security/blog/contextcrush-context7-the-mcp-server-vulnerability/
- https://www.linkedin.com/posts/upstash_mcp-server-vulnerability-in-context-7-act
- https://www.vulncheck.com/advisories/context7-prompt-injection-via-custom-ai-ins
FAQ
What is CVE-2026-75130?
CVE-2026-75130 is a vulnerability with a CVSS score of 9.0 (CRITICAL). Context7 through 2.1.2 contains a prompt injection vulnerability that allows attackers to execute malicious instructions in connected AI coding agents by injecting unsanitized content through the Cust...
How severe is CVE-2026-75130?
CVE-2026-75130 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-75130?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.