CVE-2026-75575

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 v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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-v73r
https://www.vulncheck.com/advisories/rocket-chat-missing-ddp-rate-limit-on-the-sendforgotpasswordemail-meteor-method

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 02:16

Updated : 2026-09-10 20:46

NVD link : CVE-2026-75575

Mitre link : CVE-2026-75575

CVE.ORG link : CVE-2026-75575

JSON object : View

Products Affected

No product.

CWE

CWE-204

Observable Response Discrepancy

CWE-307

Improper Restriction of Excessive Authentication Attempts

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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."}], "lastModified": "2026-09-10T20:46:19.780", "sourceIdentifier": "disclosure@vulncheck.com"}