CVE-2026-31854

Cursor Affected by Arbitrary Code Execution via Prompt Injection and Whitelist Bypass

State: Published
Severity: 8.7 High
Published: Mar 11, 2026
Updated: Mar 11, 2026
Reserved: Mar 9, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
cursorcursor	< 2.0Affected

References

https://github.com/cursor/cursor/security/advisories/GHSA-hf2x-r83r-qw5q

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