CVE-2026-28484

Comprehensive Technical Analysis of CVE-2026-28484

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2026-28484 CVSS Score: 9.8

The vulnerability in OpenClaw versions prior to 2026.2.15 is classified as an option injection vulnerability. This type of vulnerability allows attackers to manipulate the behavior of the git-hooks/pre-commit hook by creating files with maliciously crafted names. The high CVSS score of 9.8 indicates a critical severity, reflecting the potential for significant impact on confidentiality, integrity, and availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Malicious File Creation: An attacker can create files with names that begin with dashes (e.g., --), which are interpreted as options by the git add command.
• Option Injection: By exploiting the lack of a -- separator in the xargs command, attackers can inject git flags and manipulate the git history.

Exploitation Methods:

• Staging Ignored Files: Attackers can stage ignored files, such as .env files containing sensitive information, by injecting options that force git add to include these files.
• History Manipulation: The injection of git flags can alter the git history, potentially leading to unauthorized changes or data exfiltration.

3. Affected Systems and Software Versions

Affected Software:

• OpenClaw versions prior to 2026.2.15

Systems:

• Any system running the affected versions of OpenClaw, particularly those with active git repositories and pre-commit hooks enabled.

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade OpenClaw: Upgrade to OpenClaw version 2026.2.15 or later, which includes the fix for this vulnerability.
• Manual Review: Manually review the git history for any unauthorized changes or staged ignored files.

Long-Term Mitigations:

• Code Review: Implement strict code review processes for git hooks and other automated scripts.
• Input Validation: Ensure that all inputs to commands are properly validated and sanitized.
• Use of Separators: Always use -- separators when piping filenames to commands like git add.

5. Impact on Cybersecurity Landscape

Broader Implications:

• Supply Chain Security: This vulnerability highlights the importance of securing the software supply chain, as compromised git hooks can lead to unauthorized changes in code repositories.
• Automation Risks: Automated scripts and hooks must be carefully reviewed and secured to prevent injection attacks.
• Sensitive Data Exposure: The potential for exposing sensitive data, such as environment variables, underscores the need for robust access controls and monitoring.

6. Technical Details for Security Professionals

Vulnerability Details:

• Root Cause: The pre-commit hook in OpenClaw fails to use a -- separator when piping filenames through xargs to git add. This allows attackers to inject git flags by creating files with names that start with dashes.
• Exploitation: An attacker can create a file named --force .env in the repository. When the pre-commit hook runs, it will interpret --force as a git flag and add the .env file to the git history, even if it is listed in .gitignore.

Mitigation Code Example:

# Correct usage of -- separator in the pre-commit hook
git diff --cached --name-only | xargs -I {} git add -- {}

Detection:

• Log Analysis: Monitor git logs for unusual additions of ignored files or unexpected git flags.
• File System Monitoring: Implement file system monitoring to detect the creation of files with suspicious names.

Conclusion: CVE-2026-28484 is a critical vulnerability that underscores the need for vigilant code review and secure coding practices. Organizations should prioritize upgrading to the patched version of OpenClaw and implement robust monitoring and validation mechanisms to prevent similar issues in the future.