CVE-2025-61591: cursor through 1.7 (inclusive), <= 1.7

CVE-2025-61591. CVSS 3.1 base score 8.8 (HIGH, Vendor/CNA). EPSS 0.01159 (percentile 0.66626), scored 19-Oct-2026.

Affected technology

cursor · through 1.7 (inclusive)
anysphere

cursor · <= 1.7
cursor

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · User interaction required

What an attacker can do

The source says 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 commands during the interaction process, leading to command injection and potential remote code execution. Vendor/CNA’s CVSS 3.1 assessment (base score 8.8/10) rates confidentiality, integrity and availability impact as high.

Published 19-Oct-2026 17:58 UTC

CWE: CWE-78
CCR priority: 35.5 /100 (P4)
CVSS 3.1: 8.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H · Vendor/CNA
EPSS: 0.01159 · percentile 0.66626 · 2026-10-19
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-19 17:57:47.606446+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-61591.html