CVE-2026-75575
Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method
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.
INFO
Published Date :
Aug. 25, 2026, 2:16 a.m.
Last Modified :
Aug. 25, 2026, 2:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Apply DDP rate limiting to the method.
- Limit calls per minute per client.
- Configure Accounts_AllowPasswordChangeForOAuthUsers.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-75575.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-75575 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-75575
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-75575 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-75575 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 25, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/RocketChat/Rocket.Chat', 'vendor': 'RocketChat', 'product': 'Rocket.Chat', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '7.10.15', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.0.0', 'lessThan': '8.1.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.2.0', 'lessThan': '8.2.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.3.0', 'lessThan': '8.3.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.4.0', 'lessThan': '8.4.6', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.5.0', 'lessThan': '8.5.3', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.6.0', 'lessThan': '8.6.2', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.7.0', 'lessThan': '8.7.2', 'versionType': 'semver'}, {'status': 'affected', 'version': '8.8.0-rc.0', 'lessThan': '8.8.0', 'versionType': 'semver'}], 'packageURL': 'pkg:github/RocketChat/Rocket.Chat', 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-204 Added CWE CWE-307 Added Reference https://github.com/RocketChat/Rocket.Chat Added Reference https://github.com/RocketChat/Rocket.Chat/commit/3a61c3afe Added Reference https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-7c6v-m68v-v73r Added Reference https://www.vulncheck.com/advisories/rocket-chat-missing-ddp-rate-limit-on-the-sendforgotpasswordemail-meteor-method