CVE-2026-78676: GitPython before 3.1.59 fails to safely re-serialize multi-line git-config values during write operations, cor

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-78676 is a critical-severity flaw (CVSS 9.8) affecting gitpython. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GitPython before 3.1.59 fails to safely re-serialize multi-line git-config values during write operations, corrupting dormant quoted values into injected directives like core.hooksPath. Attackers can craft config files with embedded newlines that become live git directives after any unrelated GitPython config write, enabling arbitrary code execution via hook invocation.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-88
Published	2026-08-25
Last modified	2026-10-12

Publisher (CNA): VulnCheck · Vendor: gitpython project

Last updated 2026-10-12 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-25 02:16 UTCPublished CVE record published
2026-10-12 15:10 UTCUpdated Record last modified

gitpython project gitpython UPGRADE

Affected: < 3.1.59

Fixed in: 3.1.59

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show gitpython

2. UPGRADE to 3.1.59

pip install --upgrade "gitpython>=3.1.59"

Exact fixes by distribution

Python (pip) · GitPython · FIXED · 3.1.59 · vulnerable: <= 3.1.58 · source

pip install --upgrade "GitPython>=3.1.59" pip show GitPython

Fedora ELN · openbao · FIXED · 2.6.5-1.eln159 · FEDORA-2026-77adf886ae · source

sudo dnf upgrade --advisory=FEDORA-2026-77adf886ae

Fedora 46 · sugar-turtleart · FIXED · 220-16.fc46 · FEDORA-2026-b79483c788 · source

sudo dnf upgrade --advisory=FEDORA-2026-b79483c788

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

Alpine 3.24 · py3-gitpython · FIXED · py3-gitpython-3.1.61-r0

apk add --upgrade py3-gitpython apk info -v py3-gitpython

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-284h-m62q-gf8w

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-2026-78676?

gitpython: upgrade to 3.1.59. Exact commands for each OS are on this page.

Is CVE-2026-78676 being exploited?

CVE-2026-78676 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-2026-78676 affect?

CVE-2026-78676 affects gitpython. Severity is critical (CVSS 9.8). GitPython before 3.1.59 fails to safely re-serialize multi-line git-config values during write operations, corrupting dormant quoted values into injected directives like core.hooksPath. Attackers can craft config files with embedded newline

How urgent is CVE-2026-78676?

Priority 61/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

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-2026-73620 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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