{"cve":"CVE-2026-54356","nvd":{"published":"2026-08-17T21:16:46.063","modified":"2026-09-08T21:03:08.410","status":"Deferred","description":"Budibase is an open-source low-code platform. Prior to 3.41.3, POST /api/attachments/:datasourceId/url in packages/server/src/api/routes/static.ts and packages/server/src/api/controllers/static/index.ts allows an authenticated published-app user with the BASIC role to supply attacker-controlled bucket and key values and obtain signedUrl and publicUrl values backed by stored S3 datasource credentials. This issue is fixed in version 3.41.3.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","score":7.1},"cwes":["CWE-862"],"references":["https://github.com/Budibase/budibase/releases/tag/3.41.3","https://github.com/Budibase/budibase/security/advisories/GHSA-6x9p-4r67-5gjx","https://github.com/Budibase/budibase/security/advisories/GHSA-6x9p-4r67-5gjx"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:10.689564601+00:00"},"epss":{"cve":"CVE-2026-54356","score":0.00352,"percentile":0.28839,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6x9p-4r67-5gjx","url":"https://osv.dev/vulnerability/GHSA-6x9p-4r67-5gjx","summary":"Budibase authenticated arbitrary S3 signed upload URL issuance via `/api/attachments/:datasourceId/url`","modified":"2026-08-26T14:15:08.194881760Z","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."]}