CVE-2025-59944: Cursor IDE: Sensitive File Overwrite Bypass is Possible

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-03 · updated 2026-10-19
Weakness: CWE-178

Description

Cursor is a code editor built for programming with AI. Versions 1.6.23 and below contain case-sensitive checks in the way Cursor IDE protects its sensitive files (e.g., */.cursor/mcp.json), which allows attackers to modify the content of these files through prompt injection and achieve remote code execution. A prompt injection can lead to full RCE through modifying sensitive files on case-insensitive fileystems. This issue is fixed in version 1.7.

Affected products

cursor: through 1.6.23

References

https://github.com/cursor/cursor/security/advisories/GHSA-xcwh-rrwj-gxc7

Get alerted when CVE-2025-59944 or the next vulnerability affects your stack