Prompt Injection Vulnerability in Windsurf by Ox Security
CVE-2026-30615

8HIGH

Key Information:

Vendor

Ox Security

Status
Windsurf
Vendor
CVE Published:
15 April 2026

What is CVE-2026-30615?

A prompt injection vulnerability exists in Windsurf 1.9544.26, enabling remote attackers to execute arbitrary commands on affected systems. The flaw arises when the application processes HTML content controlled by attackers. This can lead to unauthorized changes to the local MCP configuration, including the automatic enrollment of a malicious MCP STDIO server. If exploited, an attacker can execute commands as the user, alter MCP configurations persistently, and potentially access sensitive information. It's crucial for users of this software to audit their configurations and apply necessary updates to mitigate such risks.

References

https://www.ox.security/blog/mcp-supply-chain-advisory-rc...

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.