What’s Vulnerable › Vulnerabilities

CVE-2026-73302: Budibase: OIDC SSO account takeover: incoming identity linked by email without checking email_verified

• Severity: critical (CVSS 9.0 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-09-08
• Weakness: CWE-287

Description

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 products

• budibase: before 3.39.30

References

• https://github.com/Budibase/budibase/commit/9ecd0048d9c3ae0ee9bd0e6204c621794dd1a4d3
• https://github.com/Budibase/budibase/pull/19173
• https://github.com/Budibase/budibase/releases/tag/3.39.30
• https://github.com/Budibase/budibase/security/advisories/GHSA-hp6v-6jw7-gv2f
• https://github.com/Budibase/budibase/security/advisories/GHSA-hp6v-6jw7-gv2f

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