CVE-2026-61613
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk31th percentile - higher than 31% of all known CVEs
Summary
A vulnerability in Cursor editor before 03/31/2026 allowed attacker-controlled web content to connect to an unauthenticated local agent endpoint, enabling code execution in the cloud agent sandbox and access to files, repositories, environment variables, credentials, and GitHub App tokens. The issue was fixed on 03/31/2026 by requiring authentication for the relevant endpoint.
Risk Assessment
The organization risks compromise of cloud agent sessions, leading to leakage of sensitive data, source code, and GitHub access credentials, as well as remote code execution within the development environment.
Recommendation
Immediately update Cursor editor to a version after 03/31/2026, which includes the fix requiring authentication for the cloud agent endpoint.
Other vulnerabilities in Cursor
See all- CVE-2026-73218High
Cursor IDE for macOS before version 3.0.0 allows an agent running in Auto-Run Sandbox mode, when Docker Desktop and Dev Containers CLI are installed, to launch a privileged container and mount Docker's virtiofs0, granting read/write access to the user's home directory and enabling host command execution with the user's privileges without an additional permission prompt.
- CVE-2026-73217High
Cursor IDE for macOS before version 3.1.2 allows an agent running in Auto-Run Sandbox mode to replace a virtual environment's Python executable with a malicious wrapper that the Microsoft Python extension invokes outside the sandbox, allowing arbitrary host commands with the user's privileges, including modifying files outside the workspace and launching applications.
- CVE-2026-63093High
A binary planting vulnerability in Cursor for Windows version 3.2.16 allows remote attackers to achieve arbitrary code execution by placing a malicious git.exe in the repository root. When a developer clones and opens a crafted repository, Cursor automatically executes the malicious binary without user interaction.
Original NVD description (English source)
Cursor is a code editor built for programming with AI. Prior to the Cloud Agent fix on 03/31/2026, browser-enabled Cursor Cloud Agent sessions allowed attacker-controlled web content to connect from inside the agent container to an unauthenticated local agent endpoint, enabling code execution within the affected Cloud Agent sandbox or session and access to files, repository contents, environment variables, credentials, and GitHub App access tokens available to that session. This issue was fixed on 03/31/2026 by requiring authentication for the relevant agent endpoint.