DDEV up to 1.25.3 Untar pkg/archive/archive.go symlink

Summaryinfo

A vulnerability marked as problematic has been reported in DDEV up to 1.25.3. Affected is an unknown function of the file pkg/archive/archive.go of the component Untar. This manipulation causes symlink. The identification of this vulnerability is CVE-2026-108262. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in DDEV up to 1.25.3. It has been declared as problematic. Affected by this vulnerability is an unknown code of the file pkg/archive/archive.go of the component Untar. The manipulation with an unknown input leads to a symlink vulnerability. The CWE definition for the vulnerability is CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. As an impact it is known to affect integrity. The summary by CVE is:

DDEV is an open-source tool for running local web development environments for PHP and Node.js. From 1.25.2 until 1.25.4, Untar in pkg/archive/archive.go validates an absolute tar symlink target after rebasing it beneath dest, but creates the symlink with the raw absolute Linkname. A crafted archive can therefore plant a host-absolute symlink and use a following regular-file entry to write outside the extraction directory. The flaw is reachable through remote add-on retrieval and database or file imports, and overwriting shell startup files, Git hooks, or cron entries can lead to code execution in the DDEV user's context. Unzip is not affected. This issue is fixed in version 1.25.4.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-108262 since 10/09/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.25.4 eliminates this vulnerability.

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Productinfo

Name

• DDEV

Version

• 1.25.0
• 1.25.1
• 1.25.2
• 1.25.3

Website

• Product: https://github.com/ddev/ddev/

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