CVE-2026-35020 Details
Description
Rejected reason: This CVE ID has been rejected by the its CVE Numbering Authority (CNA). It was determined that the attack requires an attacker to already control arbitrary environment variables, a level of access they consider functionally equivalent to code execution and outside the threat model of CLI tools.
A command injection vulnerability has been identified in Anthropic's Claude Code CLI and Claude Agent SDK for Python. This vulnerability resides in the command lookup helper and deep-link terminal launcher, allowing local attackers to execute arbitrary commands by manipulating the TERMINAL environment variable. The injection occurs when shell metacharacters are introduced into the TERMINAL variable, which are then interpreted by /bin/sh as the command lookup helper constructs and executes shell commands with shell=true. This issue can be exploited during regular CLI use or through the deep-link handler, leading to unauthorized command execution with the privileges of the user running the CLI.
Users are advised to set the ANTHROPIC_API_KEY environment variable directly, bypassing the helper execution path. In CI/CD environments, generate settings from trusted sources and avoid loading untrusted workspace settings.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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No references are available for this CVE.
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
No affected product data is available for this CVE.
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| May 29, 2026 | CVE Rejected | [email protected] |
| May 29, 2026 | CVE Modified | [email protected] |
| Apr 29, 2026 | Initial Analysis | [email protected] |
| Apr 13, 2026 | CVE Modified | [email protected] |
| Apr 6, 2026 | New CVE Received | [email protected] |