Auth bypass in Budibase Server
CVE-2026-82242
Budibase versions before 3.41.3 contain a missing authorization vulnerability in the POST /api/resources/duplicate endpoint that allows authenticated builders to inject tables, automations, queries, and screens into any other application without holding any role in the destination workspace. Attackers can inject resources by specifying an arbitrary destination workspace ID in the request body, then trigger injected automations with outgoing webhooks to exfiltrate data from victim applications.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/Budibase/budibase/security/advisories/GHSA-xqpq-288m-r5q7 (vendor-advisory)
- www.vulncheck.com/advisories/budibase-before-3.41.3-cross-application-resource-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82242?
- CVE-2026-82242 is a high-severity vulnerability in Budibase Server, classified under Missing Authorization. CVSS score: 7.7/10. Published 2026-08-28.
- How severe is CVE-2026-82242?
- High severity. CVSS v3 base score is 7.7 out of 10.