CVEvulnerability

CVE-2025-54135

9.8 CRITICAL Published 2025-08-05 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2025-08-05
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-78, CWE-829

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.

Affected configurations

• anysphere cursor (< 1.3.9)

Related

Weakness · CWE (2)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness
  • CWE-829 Inclusion of Functionality from Untrusted Control Sphere weakness

References