Vulnerability Description
Rocket.Chat exposes the sendForgotPasswordEmail Meteor method without a DDP rate limit, so an unauthenticated caller may invoke it as often as it likes. The method is reachable over DDP and over the HTTP route POST /api/v1/method.callAnon/sendForgotPasswordEmail, and it triggers a password reset message for any address that matches an account. With no DDPRateLimiter rule registered for it, a caller can drive an unbounded volume of reset mail at a chosen address from the deployment's own mail sender, and can probe addresses at scale: the method answers true for an address with no account and for a successful send, but false when the address belongs to an account that authenticates through an external provider and Accounts_AllowPasswordChangeForOAuthUsers is off, so repeated calls distinguish that class of account. Later versions register a rule permitting ten calls per minute per client address.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/RocketChat/Rocket.Chat
- https://github.com/RocketChat/Rocket.Chat/commit/3a61c3afe
- https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-7c6v-m68v-v73
- https://www.vulncheck.com/advisories/rocket-chat-missing-ddp-rate-limit-on-the-s
FAQ
What is CVE-2026-75575?
CVE-2026-75575 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Rocket.Chat exposes the sendForgotPasswordEmail Meteor method without a DDP rate limit, so an unauthenticated caller may invoke it as often as it likes. The method is reachable over DDP and over the H...
How severe is CVE-2026-75575?
CVE-2026-75575 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-75575?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.