Budibase up to 3.39.29 OIDC Flow oidc.ts users.getGlobalUserByEmail assertion

Summaryinfo

A vulnerability identified as critical has been detected in Budibase up to 3.39.29. This impacts the function users.getGlobalUserByEmail of the file packages/backend-core/src/middleware/passport/sso/oidc.ts of the component OIDC Flow. Performing a manipulation results in assertion. This vulnerability is reported as CVE-2026-73302. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Budibase up to 3.39.29. This affects the function users.getGlobalUserByEmail of the file packages/backend-core/src/middleware/passport/sso/oidc.ts of the component OIDC Flow. The manipulation with an unknown input leads to a assertion vulnerability. CWE is classifying the issue as CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-73302 since 08/11/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available.

Upgrading to version 3.39.30 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Budibase

Version

• 3.39.0
• 3.39.1
• 3.39.2
• 3.39.3
• 3.39.4
• 3.39.5
• 3.39.6
• 3.39.7
• 3.39.8
• 3.39.9
• 3.39.10
• 3.39.11
• 3.39.12
• 3.39.13
• 3.39.14
• 3.39.15
• 3.39.16
• 3.39.17
• 3.39.18
• 3.39.19
• 3.39.20
• 3.39.21
• 3.39.22
• 3.39.23
• 3.39.24
• 3.39.25
• 3.39.26
• 3.39.27
• 3.39.28
• 3.39.29

Website

• Product: https://github.com/Budibase/budibase/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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