Paper/Archive/CVE-2026-73302

CVE-2026-73302

Budibase budibase — Budibase: OIDC SSO account takeover: incoming identity linked by email without checking email_verified

EPSS 0.4%public exploit CVSS 9.0

critical.is priorityof 100

CVSS 9.0 (CNA)9.0 / 10 × 3027.0 Not in CISA KEV+300.0 EPSS percentile 37.0.370 × 207.4 Exploit: SSVC poc+1010.0 SSVC exploitation: poc+100.0

Description · from the CVE record

Budibase is an open-source low-code platform. Prior to 3.39.30, the OIDC flow in packages/backend-core/src/middleware/passport/sso/oidc.ts resolved an email without getEmailVerified or an email_verified requirement, and packages/backend-core/src/middleware/passport/sso/sso.ts then used users.getGlobalUserByEmail as a fallback account-linking key. An attacker who can authenticate through a configured identity provider that asserts a victim email as unverified can have a fresh provider identity merged into the victim Budibase account and inherit the victim roles. This issue is fixed in version 3.39.30.

Affected

ProductAffectedFixed inSource

budibase< 3.39.30–CNA

Scores by source

GitHub_M (CNA)9.0CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/Budibase/budibase/security/advisories/GHSA-hp6v-6jw7-gv2f refgithub.com/Budibase/budibase/pull/19173 refgithub.com/Budibase/budibase/commit/9ecd0048d9c3ae0ee9bd0e6204c621794dd1a4d3 refgithub.com/Budibase/budibase/releases/tag/3.39.30