CVE-2026-48147
MEDIUMDescription
Budibase is an open-source low-code platform. Prior to 3.35.4, the buildMatcherRegex() / matches() functions in packages/backend-core/src/middleware/matchers.ts route patterns are compiled into unanchored regular expressions and tested against ctx.request.url, which includes the full query string. The CSRF middleware in the Budibase Worker uses this matching system to decide whether to skip CSRF token validation. An unauthenticated attacker can forge state-changing cross-origin requests against any Worker API endpoint by injecting a public route pattern into the query string, causing the CSRF middleware to skip token validation entirely. This allows actions such as sending admin invites, modifying global configuration, and managing users without a valid CSRF token. This vulnerability is fixed in 3.35.4.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 2% of all known CVEs.
References
Related Vulnerabilities
Other CWE-185 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2020-11034 | Medium | 6.1 | 7.6% | - | Fix |
| CVE-2015-8388 | High | 7.5 | 6.6% | - | Fix |
| CVE-2018-7536 | Medium | 5.3 | 4.6% | - | Fix |
| CVE-2018-7537 | Medium | 5.3 | 4.5% | - | Fix |
| CVE-2015-8389 | Critical | 9.8 | 3.9% | - | Fix |
| CVE-2018-7158 | High | 7.5 | 3.4% | - | Fix |
Common questions
How do I fix CVE-2026-48147?
No published fix for CVE-2026-48147 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-48147 being actively exploited?
Not that we know of. CVE-2026-48147 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.11% is the estimated probability that it will be exploited in the next 30 days. That is higher than 2% of all scored CVEs.
How severe is CVE-2026-48147?
CVE-2026-48147 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-27.