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CVE-2026-11983— Ad Inserter <= 2.8.16 - Missing Authorization to Block Visibility Bypass via ai_ajax

Quick assessment

Affected
spacetime Ad Inserter – Ad Manager & AdSense Ads
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.

WordPress Ad Inserter是WordPress基金会开源的一款广告插入管理插件。 WordPress Ad Inserter 2.8.16及之前版本存在授权问题漏洞，该漏洞源于 函数缺少权限检查，可能导致未经身份验证的攻击者查看管理员限制为仅管理员可见的广告块内容。

CVSS 5.3 · Medium EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
spacetime Ad Inserter – Ad Manager & AdSense Ads ≤ 2.8.16 affected
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I. Basic Information for CVE-2026-11983

Vulnerability Information
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Vulnerability Title
Ad Inserter <= 2.8.16 - Missing Authorization to Block Visibility Bypass via ai_ajax
Source: CVE Program / CVE List V5
Vulnerability Description
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.8.16 due to a missing capability check in the `ai_ajax` function. This makes it possible for unauthenticated attackers to view the contents of ad blocks that an administrator has restricted to administrator-only visibility.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Ad Inserter 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Ad Inserter是WordPress基金会开源的一款广告插入管理插件。 WordPress Ad Inserter 2.8.16及之前版本存在授权问题漏洞，该漏洞源于`ai_ajax`函数缺少权限检查，可能导致未经身份验证的攻击者查看管理员限制为仅管理员可见的广告块内容。
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-2026-11983

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III. Intelligence Information for CVE-2026-11983

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Patches & Fixes for CVE-2026-11983 (1)

Vendor Pages for CVE-2026-11983 (1)

IV. Related Vulnerabilities

Same product: Ad Inserter – Ad Manager & AdSense Ads
Same vendor: spacetime
Same weakness: CWE-862

V. Comments for CVE-2026-11983

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