RCE in Anysphere Cursor
CVE-2025-61591
Cursor is a code editor built for programming with AI. In versions 1.7 and below, when MCP uses OAuth authentication with an untrusted MCP server, an attacker can impersonate a malicious MCP server and return crafted, maliciously injected…
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.011 (61.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Anysphere Cursor
- Cursor — versions <= 1.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-61591?
- CVE-2025-61591 is a high-severity vulnerability in Anysphere Cursor, classified under OS Command Injection. CVSS score: 8.8/10. Published 2025-10-03.
- How severe is CVE-2025-61591?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-61591 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.