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CVE-2026-62862

CriticalCVSS 9.1 / 10
Published Aug 25, 2026·Last modified Aug 27, 2026
Affected Components(1065)
baptistearno/typebot.io
react-v0.9.5
baptistearno/typebot.io
nextjs-v0.2.27
baptistearno/typebot.io
react-v0.0.60
1 / 355
Description

Typebot is an open-source chatbot builder. In self-hosted versions up to and including 3.17.1, the default passwordless email magic-link authentication is vulnerable to login-code brute forcing that leads to account takeover. The email provider overrides NextAuth's default cryptographically secure token with a 6-digit code generated using Math.random(), reducing the keyspace to 900,000 with a 10-minute expiry, and the code itself is the raw value placed in the magic link. The verification callback enforces no attempt limit, lockout, or CSRF protection, and an incorrect guess does not consume the real code because the adapter returns null on a not-found token, so a valid code survives unlimited guessing within its lifetime. The only rate limiter applies to the code-sending path and is keyed on the client-controlled X-Forwarded-For header, allowing an attacker to request many concurrent live codes for one victim and further raise the odds of a matching guess. As a result, an anonymous attacker who knows a victim's email address can brute-force the callback and obtain an authenticated session as that user with no victim interaction, gaining full access to the victim's bots, results, and connected integration credentials. Deployments configured for OAuth or SSO only, with no email provider, are not affected. This issue is fixed in version 3.18.0

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Risk Scores
Base Score
9.1

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
6.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.53%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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