CVE-2026-33646: CWE-94: Improper Control of Generation of Code ('Code Injection') in jdx mise
mise manages dev tools like node, python, cmake, and terraform. Prior to 2026.3.10, mise processes .tool-versions files through the Tera template engine during parsing, with the exec() function registered, enabling arbitrary command execution. Unlike .mise.toml files, .tool-versions files are not subject to trust verification in non-paranoid mode. This means an attacker can place a malicious .tool-versions file in a git repository, and when a victim with mise activated cds into the directory, arbitrary commands execute without any trust prompt. This vulnerability is fixed in 2026.3.10.
AI Analysis
Technical Summary
The vulnerability CVE-2026-33646 in jdx mise involves improper control of code generation (CWE-94) due to the processing of .tool-versions files through the Tera template engine with the exec() function registered. This allows an attacker to execute arbitrary commands by placing a malicious .tool-versions file in a git repository. Because .tool-versions files are not subject to trust verification in non-paranoid mode, the victim's mise client executes these commands automatically upon changing directories into the repository. The vulnerability is resolved in mise version 2026.3.10.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary commands on the victim's system with the privileges of the user running mise. This can lead to full compromise of confidentiality, integrity, and availability of the affected system. The vulnerability requires user interaction (changing directory) but no privileges or complex attack vectors. The CVSS 3.1 base score is 9.6, indicating critical severity.
Mitigation Recommendations
Upgrade to jdx mise version 2026.3.10 or later, where this vulnerability is fixed. Until then, avoid using mise in directories containing untrusted .tool-versions files or enable paranoid mode to enforce trust verification on such files. Patch status is confirmed fixed in 2026.3.10.
CVE-2026-33646: CWE-94: Improper Control of Generation of Code ('Code Injection') in jdx mise
Description
mise manages dev tools like node, python, cmake, and terraform. Prior to 2026.3.10, mise processes .tool-versions files through the Tera template engine during parsing, with the exec() function registered, enabling arbitrary command execution. Unlike .mise.toml files, .tool-versions files are not subject to trust verification in non-paranoid mode. This means an attacker can place a malicious .tool-versions file in a git repository, and when a victim with mise activated cds into the directory, arbitrary commands execute without any trust prompt. This vulnerability is fixed in 2026.3.10.
CVSS v3.1
Score 9.6critical
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-33646 in jdx mise involves improper control of code generation (CWE-94) due to the processing of .tool-versions files through the Tera template engine with the exec() function registered. This allows an attacker to execute arbitrary commands by placing a malicious .tool-versions file in a git repository. Because .tool-versions files are not subject to trust verification in non-paranoid mode, the victim's mise client executes these commands automatically upon changing directories into the repository. The vulnerability is resolved in mise version 2026.3.10.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary commands on the victim's system with the privileges of the user running mise. This can lead to full compromise of confidentiality, integrity, and availability of the affected system. The vulnerability requires user interaction (changing directory) but no privileges or complex attack vectors. The CVSS 3.1 base score is 9.6, indicating critical severity.
Mitigation Recommendations
Upgrade to jdx mise version 2026.3.10 or later, where this vulnerability is fixed. Until then, avoid using mise in directories containing untrusted .tool-versions files or enable paranoid mode to enforce trust verification on such files. Patch status is confirmed fixed in 2026.3.10.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-23T15:23:42.217Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3eb5316e08203f7dd21fbe
Added to database: 06/26/2026, 17:21:53 UTC
Last enriched: 07/03/2026, 22:29:38 UTC
Last updated: 08/10/2026, 00:41:15 UTC
Views: 76
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