{"cve":"CVE-2026-48147","nvd":{"published":"2026-05-27T18:16:27.063","modified":"2026-06-17T10:54:53.503","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-185","CWE-352"],"references":["https://github.com/Budibase/budibase/security/advisories/GHSA-wxq7-x3qp-vcr8","https://github.com/Budibase/budibase/security/advisories/GHSA-wxq7-x3qp-vcr8"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-48147","score":0.00115,"percentile":0.01534,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-wxq7-x3qp-vcr8","url":"https://osv.dev/vulnerability/GHSA-wxq7-x3qp-vcr8","summary":"Budibase: Unanchored Regex in `matchers.ts` Allows CSRF Bypass via Query String Injection in Budibase Worker ","modified":"2026-09-10T03:50:50.884123986Z","packages":[{"ecosystem":"npm","name":"@budibase/backend-core","purl":"pkg:npm/%40budibase/backend-core","ranges":["<3.35.4"],"fixed":["3.35.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}