# CVE-2026-76219: GitPython before 3.1.58 Arbitrary File Overwrite via read-tree


- **Severity:** High 7.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 19 Aug 2026
- **Updated:** 8 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-76219, ECHO-b709-0b22-8a81, GHSA-4gmw-gg2m-w46p, MINI-9572-p22h-r75m, MINI-cm3v-49x9-58xq, MINI-g3v6-f5m6-5jcw, MINI-v7pv-6656-prw7, MINI-w2cg-xphj-c259, PYSEC-2026-3838, ROOT-APP-PYPI-CVE-2026-76219, ROOT-APP-PYPI-GHSA-4gmw-gg2m-w46p, UBUNTU-CVE-2026-76219

## What is CVE-2026-76219?

CVE-2026-76219 is a high-severity vulnerability in gitpython-developers GitPython, published on 19 Aug 2026. 

### Official description

GitPython versions before 3.1.58 contain an arbitrary file overwrite vulnerability in IndexFile.from_tree, IndexFile.reset, and IndexFile.merge_tree methods that append caller-influenced treeish strings to git read-tree without option validation or argument separation. Attackers can inject the --index-output option to overwrite arbitrary files with a valid git-index blob, destroying existing file content at attacker-controlled writable paths.

Weakness: CWE-88 (Improper Neutralization of Argument Delimiters in a Command)

## Which versions are affected by CVE-2026-76219?

3 open source packages ship an affected version, including gitpython and GitPython. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gitpython` | PyPI | All versions | 3.1.58 |
| `gitpython` | PyPI | All versions | 3.1.58 |
| `GitPython` | PyPI | All versions | 3.1.58 |

Products: Gitpython Project Gitpython.

## How do I fix CVE-2026-76219?

Upgrade gitpython to 3.1.58 or later.

## Is CVE-2026-76219 being exploited?

There is no known exploitation of CVE-2026-76219 in the wild and no public exploit code.

## Other vulnerabilities in gitpython-developers GitPython

- [CVE-2023-40267](https://insights.sbomify.com/CVE-2023-40267/): GitPython vulnerable to remote code execution due to insufficient sanitization of input arguments (critical 9.8)
- [CVE-2026-78676](https://insights.sbomify.com/CVE-2026-78676/): GitPython before 3.1.59 Remote Code Execution via Config Injection (critical 9.3)
- [CVE-2026-67324](https://insights.sbomify.com/CVE-2026-67324/): GitPython 3.1.50 Authentication Bypass via Joined Short Options (critical 9.3)
- [CVE-2026-42215](https://insights.sbomify.com/CVE-2026-42215/): GitPython: Command injection via Git options bypass (high 8.8)
- [CVE-2026-87817](https://insights.sbomify.com/CVE-2026-87817/): GitPython before 3.1.60 Remote Code Execution via Git Directory Impersonation (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76219 and fix it if it is affected.

What it is: CVE-2026-76219 is a high-severity vulnerability in gitpython-developers GitPython, published on 19 Aug 2026. 
Exploitation: There is no known exploitation of CVE-2026-76219 in the wild and no public exploit code.

Affected packages and fixed versions:
- gitpython (PyPI): affected all versions; fixed in 3.1.58
- gitpython (PyPI): affected all versions; fixed in 3.1.58
- GitPython (PyPI): affected all versions; fixed in 3.1.58

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-76219/ (Markdown: https://insights.sbomify.com/CVE-2026-76219/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76219
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76219
- OSV: https://osv.dev/vulnerability/CVE-2026-76219

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-76219/
Summaries are generated and may contain mistakes; the official description above is the record.