CVE-2026-61613
Cursor: Cloud Agent Browser Sandbox Escape
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-306 |
| Vendor | cursor |
| Product | cursor |
| Published | Jul 15, 2026 |
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Affected Versions
cursor / cursor
< 03/31/2026