CVE-2026-4338— ActivityPub Routing < 8.0.2 - Unauthenticated Drafts/Scheduled/Pending Posts Disclosure
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I. Basic Information for CVE-2026-4338
Vulnerability Information
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Vulnerability Title
ActivityPub Routing < 8.0.2 - Unauthenticated Drafts/Scheduled/Pending Posts Disclosure
Source: NVD (National Vulnerability Database)
Vulnerability Description
The ActivityPub WordPress plugin before 8.0.2 does not properly filter posts to be displayed, allowed unauthenticated users to access drafts/scheduled/pending posts
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin ActivityPub 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin ActivityPub 8.0.2之前版本存在安全漏洞，该漏洞源于未正确过滤要显示的帖子，可能导致未经身份验证的用户访问草稿、预定或待处理的帖子。
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 |
|---|---|---|---|---|
| Unknown | ActivityPub | 0 ~ 8.0.2 | - |
II. Public POCs for CVE-2026-4338
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: ActivityPub
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ActivityPub for WordPress < 1.0.1 - Contributor+ Stored XSS - CVE-2023-5057
ActivityPub for WordPress < 1.0.0 - Contributor+ Stored XSS - CVE-2023-3707
ActivityPub for WordPress < 1.0.0 - Subscriber+ Arbitrary Po
Same vendor: Unknown
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V. Comments for CVE-2026-4338
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