High severity · published Mar 11, 2026
CVE-2026-31854
Cursor Affected by Arbitrary Code Execution via Prompt Injection and Whitelist Bypass
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
Cursor is a code editor built for programming with AI. Prior to 2.0 ,if a visited website contains maliciously crafted instructions, the model may attempt to follow them in order to “assist” the user. When combined with a bypass of the command whitelist mechanism, such indirect prompt injections could result in commands being executed automatically, without the user’s explicit intent, thereby posing a significant security risk. This vulnerability is fixed in 2.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
cursor · cursor
< 2.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31854
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-31854
Vendor Advisory
https://github.com/cursor/cursor/security/advisories/GHSA-hf2x-r83r-qw5q
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