CVE-2026-11900Network attack vector

Authenticated post disclosure via unchecked reusable-block ID

Published Jul 3, 2026 · Updated Jul 3, 2026

IDOR in Igor Funa Ad Inserter 2.8.16 and earlier allows remote authenticated users to read arbitrary post content through a shortcode. The replace_ai_tags() function passes the user-supplied {reusable-block-N} identifier to get_post_field() without checking read permission, post type, or status. Contributor-level access and a previewable post are sufficient to expose private, draft, pending, trashed, and password-protected posts owned by other users.

CVSS severity4.3
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in Igor Funa Ad Inserter 2.8.16 and earlier allows remote authenticated users to read arbitrary post content through a shortcode. The replace_ai_tags() function passes the user-supplied {reusable-block-N} identifier to get_post_field() without checking read permission, post type, or status. Contributor-level access and a previewable post are sufficient to expose private, draft, pending, trashed, and password-protected posts owned by other users.

The record

CVE
CVE-2026-11900
Published
Jul 3, 2026
Updated
Jul 3, 2026
Vendor
Igor Funa
Product
Ad Inserter
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.8.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Igor Funa · Ad Inserterversion=0 <=2.8.16

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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