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CVE-2022-39356— Discourse user account takeover via email and invite link

Quick assessment

Affected
discourse discourse
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.

Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在安全漏洞。攻击者利用该漏洞在收到邀请链接时访问其帐户。

CVSS 8.9 · High EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1136 · Create Account
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I. Basic Information for CVE-2022-39356

Vulnerability Information
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Vulnerability Title
Discourse user account takeover via email and invite link
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single email address can enter any non-admin user's email and gain access to their account when accepting the invitation. All users should upgrade to the latest version. A workaround is temporarily disabling invitations with `SiteSetting.max_invites_per_day = 0` or scope them to individual email addresses.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Discourse 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse存在安全漏洞。攻击者利用该漏洞在收到邀请链接时访问其帐户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
discourse discourse <= 2.8.9 -

II. Public POCs for CVE-2022-39356

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III. Intelligence Information for CVE-2022-39356

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Patches & Fixes for CVE-2022-39356 (1)

Vendor Advisories for CVE-2022-39356 (1)

Same Patch Batch · discourse · 2022-11-02 · 3 CVEs total

CVE-2022-39241 7.6 HIGH Possible Server-Side Request Forgery (SSRF) in webhooks
CVE-2022-39378 5.3 MEDIUM Displaying user badges can leak topic titles to users that have no access to the topic

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-285

V. Comments for CVE-2022-39356

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