---
title: "CVE-2026-114096: Dulwich - Remote Code Execution"
description: "Dulwich >= 0.24.0 < 1.2.8 contains a symlink following vulnerability caused by improper use of os.open without O_NOFOLLOW in porcelain.checkout(paths=[...]), letting attackers write arbitrary files and execute code by crafting malicious worktree symlinks."
url: https://panop.io/threat-heartbeat/CVE-2026-114096/
---

# CVE-2026-114096 Dulwich - Remote Code Execution

Dulwich >= 0.24.0 < 1.2.8 contains a symlink following vulnerability caused by improper use of os.open without O\_NOFOLLOW in porcelain.checkout(paths=\[...\]), letting attackers write arbitrary files and execute code by crafting malicious worktree symlinks.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-114096)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution, File System Write

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

21 October 2026

Updated

21 October 2026

Weakness

[CWE-59](https://cwe.mitre.org/data/definitions/59.html)

## Vendor fix

Upgrade to version 1.2.8 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-114096](https://nvd.nist.gov/vuln/detail/CVE-2026-114096)
- [https://github.com/jelmer/dulwich/security/advisories/GHSA-8w8g-wq8h-fq33](https://github.com/jelmer/dulwich/security/advisories/GHSA-8w8g-wq8h-fq33)
- [https://www.vulncheck.com/advisories/dulwich-0.24.0-before-1.2.8-symlink-write-through-via-porcelain-checkout-paths](https://www.vulncheck.com/advisories/dulwich-0.24.0-before-1.2.8-symlink-write-through-via-porcelain-checkout-paths)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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