CVE-2026-42215
Description
A flaw was found in GitPython, a Python library used to interact with Git repositories. This vulnerability allows an attacker to achieve arbitrary command execution by providing specially crafted arguments (kwargs) to functions such as Repo.clone_from(), Remote.fetch(), Remote.pull(), or Remote.push(). This bypasses existing security checks designed to block dangerous Git options, enabling the execution of unauthorized commands.
Statement
This is an Important arbitrary command execution flaw in GitPython, a library utilized across several Red Hat products. The vulnerability arises from an incomplete security check that allows specially crafted Python keyword arguments, such as upload_pack or receive_pack, to bypass intended safeguards against dangerous Git options. This bypass enables an attacker to execute arbitrary commands on systems where applications process untrusted input through GitPython's repository interaction functions, potentially leading to system compromise, credential theft, or unauthorized data modification.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | 8.8 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Confidentiality,Integrity,Availability,Other
Technical Impact: Execute Unauthorized Code or Commands; Alter Execution Logic; Read Application Data; Modify Application Data
An attacker could include arguments that allow unintended commands or code to be executed, allow sensitive data to be read or modified or could cause other unintended behavior.
Frequently Asked Questions
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