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CVE-2026-108262— DDEV incomplete tar symlink traversal fix allows host file overwrite - Incomplete fix of CVE-2026-32885

Quick assessment

Affected
ddev ddev
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DDEV 是一款用于运行 PHP 和 Node.js 本地 Web 开发环境的开源工具。在 1.25.2 至 1.25.4 版本中， 中的 函数在将 tar 归档中的绝对符号链接目标重基于目标目录（dest）之下进行验证后，仍使用原始的绝对链接名称（Linkname）创建符号链接。因此，攻击者可通过构造恶意归档，植入指向主机绝对路径的符号链接，并利用随后的普通文件条目将内容写入提取目录之外。该漏洞可通过远程插件检索、数据库或文件导入功能触发；若攻击者借此覆盖 Shell 启动文件、Git 钩子或定时任务（cron）

CVSS 6.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
ddev ddev >= 1.25.2, < 1.25.4 affected
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I. Basic Information for CVE-2026-108262

Vulnerability Information
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Vulnerability Title
DDEV incomplete tar symlink traversal fix allows host file overwrite - Incomplete fix of CVE-2026-32885
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ddev ddev >= 1.25.2, < 1.25.4 -

II. Public POCs for CVE-2026-108262

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III. Intelligence Information for CVE-2026-108262

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Other References for CVE-2026-108262 (1)

IV. Related Vulnerabilities

Same product: ddev
Same vendor: ddev
Same weakness: CWE-22