CVE-2026-11900— Ad Inserter <= 2.8.16 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Post Content Disclosure via 'data' Shortcode Attribute
Possible ATT&CK Techniques 1AI
T1530 · Data from Cloud StorageAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| spacetime | Ad Inserter – Ad Manager & AdSense Ads | ≤ 2.8.16 | affected |
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I. Basic Information for CVE-2026-11900
Vulnerability Information
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Vulnerability Title
Ad Inserter <= 2.8.16 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Post Content Disclosure via 'data' Shortcode Attribute
Source: CVE Program / CVE List V5
Vulnerability Description
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the 'data' attribute of the [adinserter] shortcode. This is due to the replace_ai_tags() function processing a {reusable-block-N} tag pattern that calls get_post_field('post_content', N) without verifying the requesting user's capability with current_user_can('read_post'), without restricting the post type to 'wp_block', and without checking the post status. This makes it possible for authenticated attackers, with Contributor-level access and above, to read the full content of arbitrary posts including Private, Draft, Pending, Trashed, and password-protected posts owned by other users, by placing the shortcode in a post they own and previewing it.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Spacetime Ad Inserter 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
spacetime Ad Inserter – Ad Manager & AdSense Ads是spacetime的WordPress广告管理插件。 Spacetime Ad Inserter 2.8.16及之前版本存在授权问题漏洞，该漏洞源于replace_ai_tags()函数处理{reusable-block-N}标签模式时，未验证用户读取权限、未限制post类型为'wp_block'且未检查post状态，容易受到不安全的直接对象引用攻击，可能导致已认证的贡献者级别及以上攻击者读取任意文章的全部内
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 |
|---|---|---|---|---|
| spacetime | Ad Inserter – Ad Manager & AdSense Ads | 0 ~ 2.8.16 | - |
II. Public POCs for CVE-2026-11900
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-11900 (1)
IV. Related Vulnerabilities
Same product: Ad Inserter – Ad Manager & AdSense Ads
- CVE-2026-9280
Ad Inserter <= 2.8.15 - Reflected Cross-Site Scripting via U - CVE-2025-11745
Ad Inserter <= 2.8.7 - Authenticated (Contributor+) Stored C - CVE-2023-4668
Ad Inserter <= 2.7.30 - Unauthenticated Sensitive Informatio - CVE-2023-4645
Ad Inserter <= 2.7.30 - Unauthenticated Sensitive Informatio - CVE-2022-0901
Ad Inserter < 2.7.12 - Reflected Cross-Site Scripting
Same vendor: spacetime
- CVE-2026-57693
WordPress Ad Inserter plugin <= 2.8.11 - Cross Site Scriptin - CVE-2026-9280
Ad Inserter <= 2.8.15 - Reflected Cross-Site Scripting via U - CVE-2025-11745
Ad Inserter <= 2.8.7 - Authenticated (Contributor+) Stored C - CVE-2024-49248
WordPress Ad Inserter plugin <= 2.7.37 - Reflected Cross Sit - CVE-2023-4668
Ad Inserter <= 2.7.30 - Unauthenticated Sensitive Informatio
Same weakness: CWE-639
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