CVE-2026-73623Public exploitNetwork attack vectorHinoki check available

Arbitrary command execution via unblocked clone templates

Published Aug 13, 2026 · Updated Aug 13, 2026

Command injection in GitPython before 3.1.54 allows remote authenticated users to execute arbitrary OS commands during repository clones. The unsafe_git_clone_options denylist omits --template, so Git copies an attacker-selected template's hooks and runs post-checkout. Exploitation requires control of clone options and an attacker-readable directory containing an executable hook.

CVSS severity7.7
High
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Command injection in GitPython before 3.1.54 allows remote authenticated users to execute arbitrary OS commands during repository clones. The unsafe_git_clone_options denylist omits --template, so Git copies an attacker-selected template's hooks and runs post-checkout. Exploitation requires control of clone options and an attacker-readable directory containing an executable hook.

The record

CVE
CVE-2026-73623
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
GitPython Developers
Product
GitPython
Classifications
CWE-78, CWE-184
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.1.54

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitPython Developers · GitPythonversion=0 <3.1.54

Published CVSS scores

7.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.5VulnCheckCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7VulnCheckCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-184Incomplete List of Disallowed Inputs

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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