CVE-2026-73620: GitPython before 3.1.57 fails to guard git option forwarding in IndexFile.checkout() and TagReference.create()

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HIGH 8.1UPGRADE

CVE-2026-73620 is a high-severity flaw (CVSS 8.1) affecting gitpython. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GitPython before 3.1.57 fails to guard git option forwarding in IndexFile.checkout() and TagReference.create(), allowing attackers to pass unsafe options via kwargs. Attackers can use --prefix to overwrite arbitrary files with repository content or -F to read arbitrary files returned in-band.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-08-13
Last modified	2026-10-24

Publisher (CNA): VulnCheck · Vendor: gitpython project

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-13 12:17 UTCPublished CVE record published
2026-10-24 15:10 UTCUpdated Record last modified

gitpython project gitpython UPGRADE

Affected: < 3.1.57

Fixed in: 3.1.57

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show gitpython

2. UPGRADE to 3.1.57

pip install --upgrade "gitpython>=3.1.57"

Exact fixes by distribution

Fedora 46 · kwin-zones · FIXED · 1.0.13-1.fc46 · FEDORA-2026-95888f332b · source

sudo dnf upgrade --advisory=FEDORA-2026-95888f332b

Fedora ELN · nginx-mod-brotli · FIXED · 1.0.0~rc-16.eln159 · FEDORA-2026-501a6a8273 · source

sudo dnf upgrade --advisory=FEDORA-2026-501a6a8273

Debian 12 · python-git · NO FIX YET

Debian 13 · python-git · NO FIX YET

RHEL AI (RHEL AI) 3 · rhelai3/bootc-cuda-rhel9 · NO FIX YET

RHEL AI (RHEL AI) 3 · rhelai3/bootc-gaudi-rhel9 · DEFERRED

RHEL AI (RHEL AI) 3 · rhelai3/bootc-rocm-rhel9 · NO FIX YET

RHEL AI (RHEL AI) 3 · rhelai3/disk-image-cuda-rhel9 · NO FIX YET

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/gitpython-developers/GitPython/security/advisories/GHSA-3f7w-8rr8-f37f

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-73620?

gitpython: upgrade to 3.1.57. Exact commands for each OS are on this page.

Is CVE-2026-73620 being exploited?

CVE-2026-73620 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-73620 affect?

CVE-2026-73620 affects gitpython. Severity is high (CVSS 8.1). GitPython before 3.1.57 fails to guard git option forwarding in IndexFile.checkout() and TagReference.create(), allowing attackers to pass unsafe options via kwargs. Attackers can use --prefix to overwrite arbitrary files with repository co

How urgent is CVE-2026-73620?

Priority 45/100. High severity; Public exploit reference

Software pages

Git vulnerabilities

Related CVEs

CVE-2026-73625 HIGH 8.8 UPGRADE GitPython versions before 3.1.54 contain a remote code execution vulnerability in the check_unsafe_options gua
CVE-2026-73622 HIGH 7.5 UPGRADE GitPython before 3.1.55 fails to disable environment variable expansion in Remote.create() and Submodule.add()
CVE-2026-73623 HIGH 7.5 UPGRADE GitPython before 3.1.54 contains an incomplete denylist in unsafe_git_clone_options that omits --template, all
CVE-2026-73624 HIGH 8.1 UPGRADE GitPython versions before 3.1.54 contain an arbitrary file overwrite vulnerability in the Diffable.diff method
CVE-2026-73619 MEDIUM 6.5 UPGRADE GitPython before 3.1.57 contains an incomplete denylist in the unsafe_git_archive_options guard that omits --a

References

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