CVE-2025-54135

Description

Cursor is a code editor built for programming with AI. Cursor allows writing in-workspace files with no user approval in versions below 1.3.9, If the file is a dotfile, editing it requires approval but creating a new one doesn't. Hence, if sensitive MCP files, such as the .cursor/mcp.json file don't already exist in the workspace, an attacker can chain a indirect prompt injection vulnerability to hijack the context to write to the settings file and trigger RCE on the victim without user approval. This is fixed in version 1.3.9.

Reserved 2025-07-16 | Published 2025-08-05 | Updated 2025-08-05 | Assigner GitHub_M

Problem types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-829: Inclusion of Functionality from Untrusted Control Sphere

Product status

< 1.3.9
affected

References

github.com/...cursor/security/advisories/GHSA-4cxx-hrm3-49rm

cve.org (CVE-2025-54135)

nvd.nist.gov (CVE-2025-54135)

Download JSON