CVE-2023-30606— Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse
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I. Basic Information for CVE-2023-30606
Vulnerability Information
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Vulnerability Title
Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse
Source: NVD (National Vulnerability Database)
Vulnerability Description
Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the `SiteSetting` class, notably `#clear_cache!` and `#notify_changed!`, which when done on a multisite instance, can affect the entire cluster resulting in a denial of service. Users not running in multisite environments are not affected. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键资源的不正确权限授予
Source: NVD (National Vulnerability Database)
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，该漏洞源于以管理员身份登录的用户可以调用SiteSetting类上的任意方法，当在多站点上完成时，可以影响整个集群。受影响的产品和版本：Discourse stable 3.0.1及之前版本，beta 3.1.0.beta2及之前版本，tests-passed 3.1.0.beta2及之前版本。
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
II. Public POCs for CVE-2023-30606
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Same Patch Batch · discourse · 2023-04-18 · 4 CVEs total
| CVE-2023-30538 | 5.4 MEDIUM | Stored Cross-site Scripting via improper sanitization of svg files in Discourse |
| CVE-2023-29196 | 4.2 MEDIUM | HTML injection via topic embedding in Discourse |
| CVE-2023-28440 | 2.7 LOW | Denial of service via admin theme import route in Discourse |
IV. Related Vulnerabilities
Same product: discourse
- CVE-2026-34947
Discourse: Staged user custom fields are exposed on public i - CVE-2026-27481
Discourse: Hidden tag visibility bypass on tag routes - CVE-2026-33415
Discourse: Improper Access Control in discourse-ai Allows Un - CVE-2026-33300
Discourse: Hidden group names and access metadata are expose - CVE-2026-33185
Discourse: Group SMTP test endpoint susceptible to SSRF
Same vendor: discourse
- CVE-2026-34947
Discourse: Staged user custom fields are exposed on public i - CVE-2026-27481
Discourse: Hidden tag visibility bypass on tag routes - CVE-2026-33415
Discourse: Improper Access Control in discourse-ai Allows Un - CVE-2026-33300
Discourse: Hidden group names and access metadata are expose - CVE-2026-33185
Discourse: Group SMTP test endpoint susceptible to SSRF
Same weakness: CWE-732
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WatchGuard Agent on Windows Privilege Escalation Vulnerabili - CVE-2026-41686
Claude SDK for TypeScript has Insecure Default File Permissi - CVE-2026-6499
ILM Informatique OpenConcerto 安全漏洞 - CVE-2026-41366
OpenClaw < 2026.3.31 - Arbitrary Host File Read via appendLo - CVE-2026-35367
uutils coreutils nohup Information Disclosure via Insecure D
V. Comments for CVE-2023-30606
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