PatchSiren cyber security CVE debrief
CVE-2026-67326 gitpython-developers CVE debrief
GitPython, a Python library used to interact with Git repositories, is vulnerable to a newline injection attack in its config_writer() function. This vulnerability, tracked as CVE-2026-67326, allows attackers to inject arbitrary section headers into a Git repository's .git/config file. By exploiting this vulnerability, attackers can create a forged [core] section with a hooksPath pointing to attacker-controlled directories. When Git hooks are triggered, this can lead to remote code execution. The vulnerability is particularly concerning for users of GitPython, especially those utilizing Git hooks, as it can be used to compromise the security of Git repositories. Users should be aware of this vulnerability and take steps to mitigate it, such as updating to GitPython version 3.1.50 or later, reviewing and restricting Git hook execution permissions, and monitoring Git configuration for suspicious changes. The CVE record indicates that GitPython before 3.1.50 is vulnerable to newline injection in the section parameter of config_writer(), potentially allowing remote code execution. However, detailed information about affected versions and potential mitigations is limited in the provided source corpus. Further verification is needed to confirm the scope of affected systems and to assess the effectiveness of potential mitigations.
- Vendor
- gitpython-developers
- Product
- GitPython
- CVSS
- HIGH 7.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-08-01
- Original CVE updated
- 2026-08-01
- Advisory published
- 2026-08-01
- Advisory updated
- 2026-08-01
Who should care
Users of GitPython, especially those using git hooks, should be aware of this vulnerability and take steps to mitigate it. This includes reviewing their current version of GitPython, assessing their exposure to potential attacks, and implementing compensating controls where necessary. Additionally, security teams and vulnerability management teams should prioritize patching and monitor for suspicious activity related to git configuration changes.
Technical summary
GitPython before 3.1.50 fails to validate newline characters in the section parameter of config_writer(), allowing attackers to inject arbitrary section headers into .git/config. This can be exploited to create a forged [core] section with hooksPath pointing to attacker-controlled directories, potentially achieving remote code execution when git hooks are triggered. The vulnerability highlights the importance of validating user input in configuration files to prevent unauthorized modifications.
Defensive priority
GitPython users should prioritize patching to prevent potential remote code execution via git hooks.
Recommended defensive actions
- Update GitPython to version 3.1.50 or later
- Review and restrict git hook execution permissions
- Monitor git configuration for suspicious changes
- Perform a thorough review of GitPython usage within the organization to identify potentially affected systems.
- Implement additional monitoring to detect potential exploitation attempts.
- Verify that compensating controls are in place for exposed systems while remediation is scheduled and verified.
- Track exceptions and retest remediated assets to ensure the vulnerability has been properly addressed.
Evidence notes
The CVE record indicates that GitPython before 3.1.50 is vulnerable to newline injection in the section parameter of config_writer(), potentially allowing remote code execution. However, detailed information about affected versions and potential mitigations is limited in the provided source corpus. Further verification is needed to confirm the scope of affected systems and to assess the effectiveness of potential mitigations.
Official resources
AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-01T13:17:03.063Z and has not been modified since then.