CVE-2026-22708Network attack vector

Arbitrary code execution via shell environment poisoning

Published Jan 14, 2026 · Updated Jan 14, 2026

Command allowlist bypass in Anysphere Cursor before 2.3 allows remote attackers to execute code through direct or indirect prompt injection. The terminal tool's command parser permits shell built-ins omitted from the allowlist to change environment variables that trusted commands consume. Exploitation requires the non-default Auto-Run and Allowlist modes and a command dependent on the poisoned environment; the resulting chain executes arbitrary code.

CVSS severity9.8
Critical
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command allowlist bypass in Anysphere Cursor before 2.3 allows remote attackers to execute code through direct or indirect prompt injection. The terminal tool's command parser permits shell built-ins omitted from the allowlist to change environment variables that trusted commands consume. Exploitation requires the non-default Auto-Run and Allowlist modes and a command dependent on the poisoned environment; the resulting chain executes arbitrary code.

The record

CVE
CVE-2026-22708
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
Anysphere
Product
Cursor
Classifications
CWE-78, CWE-269, CWE-20, CWE-77, CWE-74, CWE-94, CWE-15, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Anysphere · Cursorversion=< 2.3

Published CVSS scores

7.2GitHub, Inc.CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-269Improper Privilege Management
CWE-20Improper Input Validation
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-15External Control of System or Configuration Setting
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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