CVE-2026-30615 — HIGH (8.0)

Vulnerability Description

A prompt injection vulnerability in Windsurf 1.9544.26 allows remote attackers to execute arbitrary commands on a victim system. When Windsurf processes attacker-controlled HTML content, malicious instructions can cause unauthorized modification of the local MCP configuration and automatic registration of a malicious MCP STDIO server, resulting in execution of arbitrary commands without further user interaction. Successful exploitation may allow attackers to execute commands on behalf of the user, persist malicious MCP configuration changes, and access sensitive information exposed through the application.

CVSS Score

8.0

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-77

References

https://www.ox.security/blog/mcp-supply-chain-advisory-rce-vulnerabilities-acros

FAQ

What is CVE-2026-30615?

CVE-2026-30615 is a vulnerability with a CVSS score of 8.0 (HIGH). A prompt injection vulnerability in Windsurf 1.9544.26 allows remote attackers to execute arbitrary commands on a victim system. When Windsurf processes attacker-controlled HTML content, malicious ins...

How severe is CVE-2026-30615?

CVE-2026-30615 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-30615?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.