CVE-2025-64110 Cursor: Authentication Bypass Possible via New Cursorignore Write
A logic bug in Cursor allows malicious agents to bypass cursorignore protections and read sensitive files by creating new configuration files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64110?
CVE-2025-64110 is a high-severity authentication bypass vulnerability in cursor, published on 4 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cursor is a code editor built for programming with AI. In versions 1.7.23 and below, a logic bug allows a malicious agent to read sensitive files that should be protected via cursorignore. An attacker who has already achieved prompt injection, or a malicious model, could create a new cursorignore file which can invalidate the configuration of pre-existing ones. This could allow a malicious agent to read protected files. This issue is fixed in version 2.0.
Weakness: CWE-284
Which versions are affected by CVE-2025-64110?
It affects 1 product.
Products include Anysphere Cursor.
How do I fix CVE-2025-64110?
No fix has been published for CVE-2025-64110 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-64110 being exploited?
There is no known exploitation of CVE-2025-64110 in the wild and no public exploit code.
Other vulnerabilities in cursor
- CVE-2026-50548 Cursor Desktop sandbox escape via agent-controlled working directory
- CVE-2026-50549 Cursor Desktop sandbox escape via symlink and failed path canonicalization
- CVE-2025-64106 Cursor: Speedbump Modal Bypass in MCP Server Deep-Link
- CVE-2025-64107 Cursor is Vulnerable to Path Manipulation Using Backslashes on Windows
- CVE-2025-64108 Cursor's Sensitive File Modification can Lead to NTFS Path Quirks