CVE-2026-32615— Discourse: Category group moderators can perform actions on topics in restricted categories without read access
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Discourse开源的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 2026.1.3之前版本、2026.2.2之前版本和2026.3.0之前版本存在授权问题漏洞，该漏洞源于分类组版主可对其无读取权限的私有分类内的主题执行特权操作，可能导致权限提升。
Possible ATT&CK Techniques 1 AI
T1078 · Valid Accounts
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I. Basic Information for CVE-2026-32615
Vulnerability Information
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Vulnerability Title
Discourse: Category group moderators can perform actions on topics in restricted categories without read access
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, category group moderators could perform privileged actions on topics inside private categories they did not have read access to. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Discourse是Discourse开源的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 2026.1.3之前版本、2026.2.2之前版本和2026.3.0之前版本存在授权问题漏洞，该漏洞源于分类组版主可对其无读取权限的私有分类内的主题执行特权操作，可能导致权限提升。
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-2026-32615
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-32615 (1)
Same Patch Batch · discourse · 2026-03-31 · 15 CVEs total
| CVE-2026-32273 | 5.4 MEDIUM | Discourse: XSS on category description update via API |
| CVE-2026-32618 | 4.3 MEDIUM | Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id |
| CVE-2026-32951 | 4.3 MEDIUM | Discourse: Authorization bypass in oneboxer via user-controlled category id |
| CVE-2026-32113 | Discourse: Open redirect via `sso_destination_url` cookie in `enter` | |
| CVE-2026-32607 | Discourse: Stored XSS via unescaped assignee name | |
| CVE-2026-32620 | Discourse: Missing post-level authorization allows whisper metadata disclosure | |
| CVE-2026-32619 | Discourse: Insufficient topic visibility check allows unauthorized poll manipulation in pr | |
| CVE-2026-32243 | Discourse: Stored XSS in discourse-ai shared conversations onebox | |
| CVE-2026-32143 | Discourse: Admin-only report can be exported by moderators | |
| CVE-2026-33074 | Discourse: Vulnerability in discourse-subscriptions plugin allowing users to self-grant to | |
| CVE-2026-33073 | discourse-subscriptions plugin leaking stripe API key in multisite environment | |
| CVE-2026-33415 | Discourse: Improper Access Control in discourse-ai Allows Unauthorized Category Content Ex | |
| CVE-2026-33300 | Discourse: Hidden group names and access metadata are exposed to moderators through the `c | |
| CVE-2026-33185 | Discourse: Group SMTP test endpoint susceptible to SSRF |
IV. Related Vulnerabilities
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Same vendor: discourse
-
CVE-2026-91119
Discourse: Encode action_code_who in mention URLs -
CVE-2026-91121
Discourse: Chat upload filenames rendered as raw HTML in exc -
CVE-2026-91120
Discourse: Stored HTML injection in video notification email -
CVE-2026-91132
Discourse: Wildcard iframe origin allowlist bypass via autho -
CVE-2026-91122
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Same weakness: CWE-285
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OpenAM before 16.1.3 PKCE Enforcement Bypass via OAuth 2.0 H -
CVE-2026-103858
MISP Incomplete Thread Authorization Allows Unauthorized Rea -
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Missing Authorization Check in Vaadin Spreadsheet Allows Cel
V. Comments for CVE-2026-32615
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