Medium
Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-75575
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 20:29 UTC · Revision 1
Source evidence
Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method
core-osv · Original sourcePublished 25 Aug 2026, 01:30 UTC
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.
osv:CVE-2026-75575
Complete source record
{
"id": "0b7e0bb893907567d1c7c55b6030eb5211a8ce026a94d914500481a2192ecd72",
"url": "https://osv.dev/vulnerability/CVE-2026-75575",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method",
"summary": "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.",
"evidence": "osv:CVE-2026-75575",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-75575",
"aliases": [
"CVE-2026-75575",
"GHSA-7c6v-m68v-v73r"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
}
],
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],
"modified": "2026-10-28T02:30:39.059376589Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75575.json",
"https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-7c6v-m68v-v73r",
"https://nvd.nist.gov/vuln/detail/CVE-2026-75575",
"https://www.vulncheck.com/advisories/rocket-chat-missing-ddp-rate-limit-on-the-sendforgotpasswordemail-meteor-method",
"https://github.com/RocketChat/Rocket.Chat/commit/3a61c3afe",
"https://github.com/RocketChat/Rocket.Chat"
],
"provider_metadata": {
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],
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"unresolved_ranges": [
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},
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"value": "CVE-2026-75575",
"evidence": "/id"
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"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 506686,
"published_at": "2026-08-25T01:30:29.898+00:00"
}