CVE-2026-73623: GitPython before 3.1.54 Remote Code Execution via --template

Published Aug 13, 2026
·
Updated

GitPython before 3.1.54 contains an incomplete denylist in unsafegitcloneoptions that omits --template, allowing attackers to achieve arbitrary command execution during clone operations. Attackers can supply --template pointing to a directory containing malicious post-checkout hooks that execute when git clones the repository.

Affected Software

6 affected componentsFixes available
GitPython GitPython<3.1.54
Gitpython Project Gitpython Python<3.1.54
debian/python-git<3.1.30-1+deb12u3
3.1.30-1+deb12u3
debian/python-git<3.1.44-1+deb13u1
3.1.44-1+deb13u1
debian/python-git<3.1.61-1
3.1.61-1
debian/python-git<=3.1.30-1+deb12u2, <=3.1.44-1
3.1.30-1+deb12u33.1.44-1+deb13u13.2.1-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/python-git to a version that resolves this vulnerability.

    Fixed in 3.1.30-1+deb12u3
  2. Upgrade

    Upgrade debian/python-git to a version that resolves this vulnerability.

    Fixed in 3.1.44-1+deb13u1
  3. Upgrade

    Upgrade debian/python-git to a version that resolves this vulnerability.

    Fixed in 3.1.61-1
  4. Upgrade

    Upgrade debian/python-git to a version that resolves this vulnerability.

    Fixed in 3.1.30-1+deb12u3Fixed in 3.1.44-1+deb13u1Fixed in 3.2.1-1

Event History

Aug 13, 2026
CVE Published
via MITRE·11:28 AM
Data Sourced
via MITRE·11:28 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·12:17 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·12:17 PM
DescriptionSeverityAffected Software
Data Sourced
via Red Hat·12:19 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2026-73623?

The severity of CVE-2026-73623 is high, with a score of 7.5.

2

What vulnerability does CVE-2026-73623 describe?

CVE-2026-73623 describes a remote code execution vulnerability in GitPython before version 3.1.54 due to an incomplete denylist in unsafe_git_clone_options.

3

How do I fix CVE-2026-73623?

To fix CVE-2026-73623, upgrade to GitPython version 3.1.54 or later.

4

What type of attack is possible with CVE-2026-73623?

CVE-2026-73623 allows attackers to achieve arbitrary command execution during clone operations.

5

What options are unsafe in GitPython related to CVE-2026-73623?

The unsafe option omitted in GitPython related to CVE-2026-73623 is the --template option.

Company

Resources

Contact

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