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CVE-2025-64106

Cursor: Speedbump Modal Bypass in MCP Server Deep-Link

Published: Nov 4, 2025Updated: Nov 7, 2025 Sources: CVE List NVDCWE-78
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.3%
Top 77.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Cursor is a code editor built for programming with AI. In versions 1.7.28 and below, an input validation flaw in Cursor's MCP server installation enables specially crafted deep-links to bypass the standard security warnings and conceal executed commands from users if they choose to accept the server. If an attacker is able to convince a victim to navigate to a malicious deeplink, the victim will not see the correct speedbump modal, and if they choose to accept, will execute commands specified by the attackers deeplink.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-78

Affected Products

cursorcursor
Mixed
DevTools & CI / ide-editor
cursoranysphere
SaaS
AI / ML / ai-agent-tooling
cursorcommercialUSDevTools & CIaka cursor ai
anyspherecommercialAI / MLaka anysphere ai

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://github.com/cursor/cursor/security/advisories/GHSA-4575-fh42-7848
github.com

Timeline

Published
Nov 4, 2025
Last Updated
Nov 7, 2025

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