{"cve":"CVE-2026-73410","nvd":{"published":"2026-08-17T21:16:48.823","modified":"2026-09-08T21:03:08.410","status":"Deferred","description":"Budibase is an open-source low-code platform. Prior to 3.40.0, packages/backend-core/src/utils/outboundFetch.ts pinned a validated address through a Node agent, but the REST integration used getDispatcher from packages/backend-core/src/utils/fetch.ts, causing undici to ignore that agent and resolve the hostname again. A builder could use DNS rebinding to make packages/server/src/integrations/rest.ts connect to an internal address after a public address passed validation, with full response access and arbitrary REST methods. The fix adds createPinnedLookup support to the undici dispatcher and passes the validated address to custom fetch implementations. This issue is fixed in version 3.40.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.5},"cwes":["CWE-367","CWE-918"],"references":["https://github.com/Budibase/budibase/commit/5758bdb242802ca20c4ed0dc579e4330ee898ef3","https://github.com/Budibase/budibase/security/advisories/GHSA-v42f-v8xc-j435"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:10.689564601+00:00"},"epss":{"cve":"CVE-2026-73410","score":0.0028,"percentile":0.20529,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v42f-v8xc-j435","url":"https://osv.dev/vulnerability/GHSA-v42f-v8xc-j435","summary":"Budibase: SSRF via DNS rebinding in the REST datasource integration","modified":"2026-08-12T19:40:59.053071Z","packages":[{"ecosystem":"npm","name":"@budibase/server","purl":"pkg:npm/%40budibase/server","ranges":["<=3.38.1"],"fixed":[]}]}],"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."]}