CVE-2026-54320 Daytona: Cross-tenant organization takeover via invitation acceptance with an unverified email
Attackers can take over organizations by accepting invitations with unverified emails, gaining owner privileges in Daytona AI infrastructure.
- 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-2026-54320?
CVE-2026-54320 is a high-severity authentication bypass vulnerability in daytonaio daytona, published on 23 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. Prior to 0.184.0, organization invitations could be accepted (and declined) by a user whose email matched the invitation but had not been verified. Daytona authenticates users via OIDC and matches an invitation's target email against the email in the caller's token, but the invitation accept and decline paths did not require that email to be verified, unlike organization creation, which already enforced verification. On identity providers that allow self-service signup and issue a session before the email is verified, an actor could register an address matching a pending invitation, leave it unverified, and accept the invitation, joining the target organization with the role the invitation carried (up to Owner). This vulnerability is fixed in 0.184.0.
Which versions are affected by CVE-2026-54320?
How do I fix CVE-2026-54320?
No fix has been published for CVE-2026-54320 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-2026-54320 being exploited?
There is no known exploitation of CVE-2026-54320 in the wild and no public exploit code.
Sources
Also known as GHSA-m6hx-cffh-3f3h.