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CRITICAL

CVE-2026-31816

CVSS v3

9.1

CRITICAL

EPSS Score

15.9 %

exploit probability

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

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() midd

Technical details

CVSS v3 Vector
3.1
Published
2026-03-09
Last Modified
2026-03-13

Frequently asked questions

What is CVE-2026-31816?

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() midd

Is CVE-2026-31816 actively exploited?

Active exploitation of CVE-2026-31816 has not been confirmed. The EPSS score is 15.9%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-31816?

CVE-2026-31816 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string 3.1.

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