CVE-2026-87817: GitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersona

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HIGH 8.8UPGRADE

CVE-2026-87817 is a high-severity flaw (CVSS 8.8) affecting gitpython. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersonate the git directory using tracked files like gitdir, commondir, and HEAD. Attackers can execute arbitrary code by placing a malicious pre-commit hook in the tracked hooks directory that executes when a victim calls index.commit() on a cloned or opened repository.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-94
Published	2026-09-09
Last modified	2026-09-16

Publisher (CNA): VulnCheck · Vendor: gitpython project

Last updated 2026-09-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-09 12:17 UTCPublished CVE record published
2026-09-16 15:24 UTCUpdated Record last modified

gitpython project gitpython UPGRADE

Affected: < 3.1.60

Fixed in: 3.1.60

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show gitpython

2. UPGRADE to 3.1.60

pip install --upgrade "gitpython>=3.1.60"

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-2026-87817?

gitpython: upgrade to 3.1.60. Exact commands for each OS are on this page.

Is CVE-2026-87817 being exploited?

CVE-2026-87817 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-2026-87817 affect?

CVE-2026-87817 affects gitpython. Severity is high (CVSS 8.8). GitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersonate the git directory using tracked files like gitdir, commondir, and HEAD. Attackers can execute arbitrary code by placing a malic

How urgent is CVE-2026-87817?

Priority 45/100. High severity; Public exploit reference

Software pages

Git vulnerabilities

Related CVEs

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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-2026-73620 HIGH 8.1 UPGRADE GitPython before 3.1.57 fails to guard git option forwarding in IndexFile.checkout() and TagReference.create()
CVE-2026-73624 HIGH 8.1 UPGRADE GitPython versions before 3.1.54 contain an arbitrary file overwrite vulnerability in the Diffable.diff method

References

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