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CVE-2026-89036— Appwrite < 2.0.0 Argument Injection via providerRootDirectory Parameter

Quick assessment

Affected
appwrite appwrite
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.

Appwrite 2.0.0 之前的版本存在一个参数注入漏洞，允许拥有 或 权限的认证用户通过向用于构建 GNU tar 命令的 参数中注入制表符（TAB）来执行任意命令。该应用使用了 而非 ，且未对参数进行引号包裹，导致制表符能够绕过过滤，被解释为参数分隔符，从而允许注入任意的 GNU tar 参数（例如 ），进而以构建 worker 进程用户的身份实现远程代码执行。

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
appwrite appwrite < 2.0.0 affected
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I. Basic Information for CVE-2026-89036

Vulnerability Information
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Vulnerability Title
Appwrite < 2.0.0 Argument Injection via providerRootDirectory Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
Appwrite before 2.0.0 contains an argument injection vulnerability that allows authenticated users with functions.write or sites.write permissions to execute arbitrary commands by injecting TAB characters into the providerRootDirectory parameter used to construct GNU tar commands. The application uses escapeshellcmd instead of escapeshellarg and fails to quote the parameter, allowing TAB characters to survive sanitization and be interpreted as argument separators, enabling injection of arbitrary GNU tar arguments such as --checkpoint-action=exec to achieve remote code execution as the builds worker process user.
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
参数注入或修改
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
appwrite appwrite 0 ~ 2.0.0 -

II. Public POCs for CVE-2026-89036

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III. Intelligence Information for CVE-2026-89036

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Patches & Fixes for CVE-2026-89036 (1)

Vendor Advisories for CVE-2026-89036 (1)

IV. Related Vulnerabilities

Same product: appwrite
Same vendor: appwrite
Same weakness: CWE-88

V. Comments for CVE-2026-89036

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