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CVE-2026-75575— Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method

Quick assessment

Affected
RocketChat Rocket.Chat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rocket.Chat 的 Meteor 方法未实施 DDP 速率限制，因此未认证的攻击者可以无限制地频繁调用该方法。该方法可通过 DDP 协议以及 HTTP 路由 进行访问，并且当输入地址与现有账户匹配时，会触发密码重置邮件的发送。 由于未为此方法注册任何 DDPRateLimiter 规则，攻击者可以从部署实例的邮箱发送方无限制地向指定地址发送大量重置邮件，并能够大规模探测邮箱地址的有效性：对于不存在的账户地址以及成功发送重置邮件的地址，该方法均返回 ；而对于属于外部身份提供商认证且配置了 为关闭状态的账户地址

CVSS 5.3 · Medium EPSS 0.23% · P14

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force

Affected Version Matrix 9

VendorProduct Version RangeStatus
RocketChat Rocket.Chat < 7.10.15 affected
8.0.0< 8.1.8 affected
8.2.0< 8.2.8 affected
8.3.0< 8.3.8 affected
8.4.0< 8.4.6 affected
8.5.0< 8.5.3 affected
8.6.0< 8.6.2 affected
8.7.0< 8.7.2 affected
… +1 more rows
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I. Basic Information for CVE-2026-75575

Vulnerability Information
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Vulnerability Title
Rocket.Chat Missing DDP Rate Limit on the sendForgotPasswordEmail Meteor Method
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
RocketChat Rocket.Chat 0 ~ 7.10.15 -

II. Public POCs for CVE-2026-75575

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III. Intelligence Information for CVE-2026-75575

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Patches & Fixes for CVE-2026-75575 (1)

Vendor Advisories for CVE-2026-75575 (2)

Vendor Pages for CVE-2026-75575 (1)

IV. Related Vulnerabilities

Same product: Rocket.Chat
Same vendor: RocketChat
Same weakness: CWE-307

V. Comments for CVE-2026-75575

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