How severe is CVE-2026-73623?

CVE-2026-73623 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-73623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-73623?

CVE-2026-73623 affects Gitpython Project Gitpython. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-73623?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-73623 published?

CVE-2026-73623 was published on 2026-08-13 and last updated on 2026-09-03.

CVE-2026-73623

CVE-2026-73623 is a high-severity vulnerability in Gitpython Project Gitpython with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 7.7
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Gitpython Project Gitpython
Published: 2026-08-13
Last modified: 2026-09-03

Description

GitPython before 3.1.54 contains an incomplete denylist in unsafe_git_clone_options 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.

Frequently asked questions

What is CVE-2026-73623?: GitPython before 3.1.54 contains an incomplete denylist in unsafe_git_clone_options 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.
How severe is CVE-2026-73623?: CVE-2026-73623 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-73623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-73623?: CVE-2026-73623 affects Gitpython Project Gitpython. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-73623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-73623 published?: CVE-2026-73623 was published on 2026-08-13 and last updated on 2026-09-03.

References

Affected products (1)

cpe:2.3:a:gitpython_project:gitpython:*:*:*:*:*:python:*:*

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