# CVE-2026-75130

## Summary

- **CVE ID:** CVE-2026-75130
- **Severity:** MEDIUM
- **CVSS Score:** 9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H)
- **CWE:** CWE-1427
- **Published:** Aug 18, 2026
- **Last Modified:** Aug 19, 2026

## 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.

## Affected Products

- Uptash — Context7 (0)

## References

- [CNA](https://noma.security/blog/contextcrush-context7-the-mcp-server-vulnerability/)
- [CNA](https://www.linkedin.com/posts/upstash_mcp-server-vulnerability-in-context-7-activity-7435686676049387520-PBVo/)
- [CNA](https://www.vulncheck.com/advisories/context7-prompt-injection-via-custom-ai-instructions)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.28%
- **EPSS Percentile:** 19.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-09._