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CVE-2022-31025— Invite bypasses user approval in Discourse

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 2.8.4 之前版本存在安全漏洞，该漏洞源于在使用单点登录的网站上邀请用户可以绕过 must_approve_users 检查，并且员工的邀请总是会自动获得批准。

CVSS 2.6 · Low EPSS 0.96% · P60
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I. Basic Information for CVE-2022-31025

Vulnerability Information
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Vulnerability Title
Invite bypasses user approval in Discourse
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open source platform for community discussion. Prior to version 2.8.4 on the `stable` branch and 2.9.0beta5 on the `beta` and `tests-passed` branches, inviting users on sites that use single sign-on could bypass the `must_approve_users` check and invites by staff are always approved automatically. The issue is patched in Discourse version 2.8.4 on the `stable` branch and version `2.9.0.beta5` on the `beta` and `tests-passed` branches. As a workaround, disable invites or increase `min_trust_level_to_allow_invite` to reduce the attack surface to more trusted users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
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 2.8.4 之前版本存在安全漏洞，该漏洞源于在使用单点登录的网站上邀请用户可以绕过 must_approve_users 检查，并且员工的邀请总是会自动获得批准。
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 < 2.8.4 -

II. Public POCs for CVE-2022-31025

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III. Intelligence Information for CVE-2022-31025

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Patches & Fixes for CVE-2022-31025 (3)

Vendor Advisories for CVE-2022-31025 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2022-31025

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