{"cve":"CVE-2026-54353","nvd":{"published":"2026-06-26T21:16:35.417","modified":"2026-06-30T20:05:11.687","status":"Analyzed","description":"Budibase is an open-source low-code platform. Prior to 3.39.9, authenticated users with automation permissions can bypass Budibase's SSRF blacklist through DNS rebinding. The outbound fetch flow validates a hostname against the blacklist before the request is sent, but the actual socket connection later performs a separate DNS lookup through node-fetch. Since the validated IPs are never pinned to the connection, an attacker-controlled hostname can return a public IP during validation and a private/internal IP during the real connection. This results in a non-blind SSRF primitive against internal services reachable from the Budibase host, including loopback, RFC1918 ranges, and cloud metadata endpoints. This vulnerability is fixed in 3.39.9.","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:L/A:N","score":7.1},"cwes":["CWE-367","CWE-918"],"references":["https://github.com/Budibase/budibase/security/advisories/GHSA-gfq7-5x4g-3xhf","https://github.com/Budibase/budibase/security/advisories/GHSA-gfq7-5x4g-3xhf"],"products":["budibase:budibase"],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-54353","score":0.00213,"percentile":0.11593,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-gfq7-5x4g-3xhf","url":"https://osv.dev/vulnerability/GHSA-gfq7-5x4g-3xhf","summary":"@budibase/backend-core has potential SSRF DNS rebinding bypass in outbound fetch validation","modified":"2026-08-12T19:00:07.922760202Z","packages":[{"ecosystem":"npm","name":"@budibase/backend-core","purl":"pkg:npm/%40budibase/backend-core","ranges":["<3.39.9"],"fixed":["3.39.9"]}]}],"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."]}