CVE-2026-75575 Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method
Unauthenticated attackers can spam password reset emails and enumerate OAuth users due to missing rate limits on the sendForgotPasswordEmail method.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75575?
CVE-2026-75575 is a medium-severity denial of service vulnerability in RocketChat Rocket.Chat, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-75575?
How do I fix CVE-2026-75575?
No fix has been published for CVE-2026-75575 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-75575 being exploited?
There is no known exploitation of CVE-2026-75575 in the wild and no public exploit code.
Sources
Also known as GHSA-7c6v-m68v-v73r, GHSA-jfh6-w7r2-rj74.