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CVE-2026-41428

critical

Budibase is an open-source low-code platform.

Vendor / product: Budibase — budibase

Budibase is an open-source low-code platform. Prior to 3.35.4, the authenticated middleware uses unanchored regular expressions to match public (no-auth) endpoint patterns against ctx.request.url. Since ctx.request.url in Koa includes the query string, an attacker can access any protected endpoint by appending a public endpoint path as a query parameter. For example, POST /api/global/users/search?x=/api/system/status bypasses all authentication because the regex /api/system/status/ matches in the query string portion of the URL. This vulnerability is fixed in 3.35.4.

CVSS
9.1
9.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-04-24 20:16
Modified: 2026-11-11 23:10
NVD status: Analyzed
Last synced 3 hours ago
Verified against the source API 2026-11-11 23:13 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

budibase / budibase <3.35.4

Weakness classification (CWE)

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/Budibase/budibase/security/advisories/GHSA-8783-3wgf-jggf
Vendor advisory: https://github.com/Budibase/budibase/security/advisories/GHSA-8783-3wgf-jggf
Patch / mitigation: https://github.com/Budibase/budibase/security/advisories/GHSA-8783-3wgf-jggf
Patch / mitigation: https://github.com/Budibase/budibase/security/advisories/GHSA-8783-3wgf-jggf

References

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 23:13 UTC · record ↗

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