CVE-2026-76221
Description
A flaw was found in GitPython. This vulnerability allows attackers to inject malicious configuration options by manipulating option names within the option-name validator. By injecting special characters, an attacker can forge arbitrary git-config directives, potentially leading to arbitrary code execution on the system when a git operation is performed.
Statement
GitPython's option-name validator fails to neutralize equals signs, hash symbols, and whitespace in option names, letting an attacker who controls option names forge arbitrary git-config directives (e.g. sshCommand = touch /tmp/RCE #) that execute arbitrary commands via core.sshCommand or core.hooksPath on the next git operation, fixed in 3.1.58. Red Hat products that bundle GitPython use it as an internal build/automation-time dependency and do not expose git option names to adversary-controlled input; the vulnerable input cannot be controlled by an attacker in these products, so they are marked not affected. GitPython as shipped in Red Hat OpenStack Platform 16.2 and 17.1 contains the vulnerable library code and retains its affected determination.
Mitigation
Do not pass untrusted or attacker-influenced git option names to GitPython. Upgrade to GitPython 3.1.58 or later, where option-name (config) injection is fixed.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 8.8 | N/A | 8.8 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | 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:L/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,Non-Repudiation
Technical Impact: Execute Unauthorized Code or Commands; DoS: Crash, Exit, or Restart; Read Files or Directories; Modify Files or Directories; Read Application Data; Modify Application Data; Hide Activities
Attackers could execute unauthorized operating system commands, which could then be used to disable the product, or read and modify data for which the attacker does not have permissions to access directly. Since the targeted application is directly executing the commands instead of the attacker, any malicious activities may appear to come from the application or the application's owner.
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