CVE-2026-31816— Budibase Universal Auth Bypass via Webhook Query Param Injection

Budibase Universal Auth Bypass via Webhook Query Param Injection

Budibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.31.4 and earlier, the Budibase server's authorized() middleware that protects every server-side API endpoint can be completely bypassed by appending a webhook path pattern to the query string of any request. The isWebhookEndpoint() function uses an unanchored regex that tests against ctx.request.url, which in Koa includes the full URL with query parameters. When the regex matches, the authorized() middleware immediately calls return next(), skipping all authentication, authorization, role checks, and CSRF protection. This means a completely unauthenticated, remote attacker can access any server-side API endpoint by simply appending ?/webhooks/trigger (or any webhook pattern variant) to the URL.

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

输出中的特殊元素转义处理不恰当(注入)

Budibase 注入漏洞

Budibase是英国Budibase开源的一个用于在几分钟内创建内部应用程序、工作流和管理面板的低代码平台。 Budibase 3.31.4及之前版本存在注入漏洞，该漏洞源于authorized()中间件可通过在查询字符串中附加webhook路径模式被完全绕过，可能导致未经身份验证的远程攻击者访问任何服务器端API端点。

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