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CVE-2026-34154— Discourse has a subscription access bypass in its discourse-subscriptions plugin

AI Predicted 7.5 Difficulty: Trivial EPSS 0.05% · P17

Possible ATT&CK Techniques 1AI

T1136 · Create Account

Affected Version Matrix 4

VendorProductVersion RangeStatus
discoursediscourse< 2026.1.4affected
>= 2026.3.0-latest, < 2026.3.1affected
>= 2026.4.0-latest, < 2026.4.1affected
>= 2026.5.0-latest, < 2026.5.0-latest.1affected
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I. Basic Information for CVE-2026-34154

Vulnerability Information
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Vulnerability Title
Discourse has a subscription access bypass in its discourse-subscriptions plugin
Source: NVD (National Vulnerability Database)
Vulnerability Description
Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, a vulnerability in the discourse-subscriptions plugin allows users to gain access to subscription-gated groups without completing payment. This issue has been fixed in versions 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Discourse 安全漏洞
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 2026.1.4之前版本、2026.3.1之前版本、2026.4.1之前版本和2026.5.0-latest.1之前版本存在安全漏洞，该漏洞源于discourse-subscriptions插件允许用户无需完成支付即可访问订阅限制组。
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

VendorProductAffected VersionsCPESubscribe
discoursediscourse < 2026.1.4 -

II. Public POCs for CVE-2026-34154

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III. Intelligence Information for CVE-2026-34154

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Vendor Advisories for CVE-2026-34154 (1)

Same Patch Batch · discourse · 2026-05-19 · 3 CVEs total

CVE-2026-322445.3 MEDIUMDiscourse: Cached outdated summaries can leak removed content
CVE-2026-33514Discourse: Information Disclosure in Form Template API Due to Missing Authorization

IV. Related Vulnerabilities

Same product: discourse
Same vendor: discourse
Same weakness: CWE-862

V. Comments for CVE-2026-34154

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