CVE-2026-73302 Budibase: OIDC SSO account takeover: incoming identity linked by email without checking email_verified
Attackers can take over victim accounts by exploiting OIDC SSO email verification bypass, inheriting victim roles and privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73302?
CVE-2026-73302 is a critical authentication bypass vulnerability in budibase, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2026-73302?
2 open source packages ship an affected version, including @budibase/server.
| Package | Affected | Fixed in |
|---|---|---|
@budibase/server npm | All versions to 3.38.1 | None |
@budibase/server npm | All versions to 3.38.1 | None |
How do I fix CVE-2026-73302?
No fix has been published for CVE-2026-73302 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-73302 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73302 exists.
Sources
Also known as GHSA-hp6v-6jw7-gv2f.