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CVE-2026-76221— GitPython before 3.1.58 Config Injection via option-name

Quick assessment

Affected
gitpython-developers GitPython
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

gitpython-developers GitPython是gitpython-developers团队的一个提供Git仓库操作能力的Python组件。 gitpython-developers GitPython 3.1.58之前版本存在输入验证错误漏洞，该漏洞源于选项名称验证器中的配置名称注入，攻击者可通过向选项名称中注入等号、井号和空格来伪造任意git-config指令，导致在下次git操作时通过core.sshCommand或core.hooksPath执行任意命令。

CVSS 8.8 · High EPSS 0.37% · P30

Affected Version Matrix 2

VendorProduct Version RangeStatus
gitpython-developers GitPython < 3.1.58 affected
3.1.58 unaffected
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I. Basic Information for CVE-2026-76221

Vulnerability Information
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Vulnerability Title
GitPython before 3.1.58 Config Injection via option-name
Source: CVE Program / CVE List V5
Vulnerability Description
GitPython before 3.1.58 contains a config-name injection vulnerability in the option-name validator that allows attackers to forge arbitrary git-config directives by injecting equals signs, hash symbols, and whitespace into option names. Attackers can inject malicious option names like 'sshCommand = touch /tmp/RCE #' to execute arbitrary commands via core.sshCommand or core.hooksPath on the next git operation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
gitpython-developers GitPython 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
gitpython-developers GitPython是gitpython-developers团队的一个提供Git仓库操作能力的Python组件。 gitpython-developers GitPython 3.1.58之前版本存在输入验证错误漏洞，该漏洞源于选项名称验证器中的配置名称注入，攻击者可通过向选项名称中注入等号、井号和空格来伪造任意git-config指令，导致在下次git操作时通过core.sshCommand或core.hooksPath执行任意命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gitpython-developers GitPython 0 ~ 3.1.58 -

II. Public POCs for CVE-2026-76221

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8078 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-76221

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Vendor Advisories for CVE-2026-76221 (2)

Same Patch Batch · gitpython-developers · 2026-08-19 · 6 CVEs total

CVE-2026-76220 8.8 HIGH GitPython before 3.1.58 Command Execution via split_single_char_options
CVE-2026-76222 8.2 HIGH GitPython before 3.1.58 Path Traversal via .gitmodules Submodule Name
CVE-2026-76219 8.1 HIGH GitPython before 3.1.58 Arbitrary File Overwrite via read-tree
CVE-2026-76218 7.5 HIGH GitPython before 3.1.58 Remote Code Execution via Repo.init
CVE-2026-76217 6.5 MEDIUM GitPython before 3.1.58 Arbitrary File Read via pathspec-from-file

IV. Related Vulnerabilities

Same product: GitPython
Same vendor: gitpython-developers
Same weakness: CWE-74

V. Comments for CVE-2026-76221

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