CVE-2023-22453— Discourse vulnerable to exposure of user post counts per topic to unauthorized users
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I. Basic Information for CVE-2023-22453
Vulnerability Information
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Vulnerability Title
Discourse vulnerable to exposure of user post counts per topic to unauthorized users
Source: NVD (National Vulnerability Database)
Vulnerability Description
Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, the number of times a user posted in an arbitrary topic is exposed to unauthorized users through the `/u/username.json` endpoint. The issue is patched in version 2.8.14 and 3.0.0.beta16. There is no known workaround.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Discourse 信息泄露漏洞
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存在信息泄露漏洞，该漏洞源于其允许任意主题中发布的用户通过/u/username.json端点暴露给未授权用户的次数。
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-2023-22453
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|---|
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Same Patch Batch · discourse · 2023-01-05 · 8 CVEs total
| CVE-2023-22454 | 8.0 HIGH | Discourse vulnerable to Cross-site Scripting through pending post titles descriptions |
| CVE-2023-22455 | 6.8 MEDIUM | Discourse vulnerable to Cross-site Scripting through tag descriptions |
| CVE-2022-23548 | 6.5 MEDIUM | Discourse 跨站脚本漏洞 |
| CVE-2022-46177 | 5.7 MEDIUM | Discourse password reset link can lead to in account takeover if user changes to a new ema |
| CVE-2022-23549 | 5.7 MEDIUM | Discourse vulnerable to bypass of post max_length using HTML comments |
| CVE-2022-23546 | 5.5 MEDIUM | Discourse vulnerable to private topic leak via email#send_digest |
| CVE-2022-46168 | 3.5 LOW | Group SMTP user emails are exposed in CC email header |
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-200
- CVE-2026-42333
quarkus-openapi-generator has overly broad path-parameter ma - CVE-2026-8198
Activity Logs, User Activity Tracking, Multisite Activity Lo - CVE-2026-42456
AnythingLLM: Cross-User TTS Audio Disclosure via Chat ID (ID - CVE-2026-41520
Cillium exposes sensitive information included in the cilium - CVE-2026-25199
Apache CloudStack: Proxmox Extension Allows Unauthorized Cro
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