What’s Vulnerable › Vulnerabilities
CVE-2025-49150: Cursor Agent Potentially Leaks Information using JSON schema
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-06-11 · updated 2026-06-17
- Weakness: CWE-200
Description
Cursor is a code editor built for programming with AI. Prior to 0.51.0, by default, the setting json.schemaDownload.enable was set to True. This means that by writing a JSON file, an attacker can trigger an arbitrary HTTP GET request that does not require user confirmation. Since the Cursor Agent can edit JSON files, this means a malicious agent, for example, after a prompt injection attack already succeeded, could trigger a GET request to an attacker controlled URL, potentially exfiltrating other data the agent may have access to. This vulnerability is fixed in 0.51.0.
Affected products
- getcursor cursor: before 0.51.0
References
Get alerted when CVE-2025-49150 or the next vulnerability affects your stack