Sign in Sign up
JA · EN · FR
SecPulse
Categories
CVE-2026-11900 medium CVSS 4.3

Vulnerability in Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin) (CVE-2026-11900)

Summary

Vulnerability in Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin) (CVE-2026-11900). Risk of unauthorized operations or information disclosure.

Original description

The description as published by the source.

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: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-11900 has been found in Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin).
Risk of unauthorized operations or information disclosure. CVSS score: 4.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin) CVE-2026-11900" on the vendor's site.

CVE-2026-11900 (Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin)) — CWE-639 / CVSS v3 4.3
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-639) exists in Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin).

📍 Affected scope

Check the vendor advisory for the affected versions of Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin).

🔥 Severity

Severity: Medium (CVSS 4.3/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで Ad Inserter – Ad Manager & AdSense Ads (WordPress plugin) を使っているサービスとバージョンを洗い出す。

  2. 2
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

References

We use cookies for analytics and ad measurement. This setting applies to all Game co., Ltd. sites. Details