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CVE-2026-78676

Gitpython vulnerability

9.8 CRITICALPublic exploitEPSS 0.78%
  1. Published25 Aug 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Gitpython< 3.1.59

Remediation

Fixed in
Gitpython≥ 3.1.59

References

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Frequently asked

Is CVE-2026-78676 being actively exploited?

CVE-2026-78676 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.78%.

How severe is CVE-2026-78676?

CVE-2026-78676 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.78% probability of exploitation.

Which products are affected by CVE-2026-78676?

Affected products include Gitpython.

How do I fix CVE-2026-78676?

Upgrade affected software to a fixed version, for example Gitpython 3.1.59 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.