What’s Vulnerable › Vulnerabilities

CVE-2026-73303: Budibase: Email Change IDOR via POST /api/v2/email allows full Account Takeover (accountId not validated against session)

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-12 · updated 2026-09-08
• Weakness: CWE-639

Description

Budibase is an open-source low-code platform. Prior to 3.40.0, POST /api/v2/email on account.budibase.app accepted a client-controlled accountId without binding it to the authenticated session, while checking only currentEmail. An authenticated attacker who obtains a victim account identifier can start the email-change workflow for the victim, receive and submit the verification code through POST /api/v2/email/verification, move the victim email to an attacker-controlled address, and complete a password reset as the victim. This issue is fixed in version 3.40.0.

Affected products

• budibase: before 3.40.0

References

• https://github.com/Budibase/budibase/releases/tag/3.40.0
• https://github.com/Budibase/budibase/security/advisories/GHSA-c8vc-7pv3-g98p

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