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3D FlipBook <= 1.16.20 — Unauthenticated Sensitive Information Exposure in 'id' Parameter

CVE-2026-15758Published · Updated

Action summary

Affected: ≤1.16.20Update to 1.16.21 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:L Confidentiality
Low
I:N Integrity
None
A:N Availability
None
Weakness
CWE-200 Information Exposure
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery interactive-3d-flipbook-powered-physics-engine

  1. Affected≤ 1.16.20
  2. Patched in1.16.21

Update to 1.16.21 or newer.

You are affected if you run ≤ 1.16.20. Version 1.16.21 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under 3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 1.16.21, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch 3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Suredsi Ulpada (cyberdesu).

The 3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.16.20 via the 'id' parameter. This makes it possible for unauthenticated attackers to extract sensitive data including the full metadata payload of password-protected flipbooks — including title, outline, props, and the serialized data blob containing the underlying PDF file's direct URL — bypassing WordPress post-password confidentiality. Flipbook post IDs can be pre-enumerated via the also-unauthenticated fb3d_send_posts AJAX action, requiring no prior knowledge to target specific flipbooks.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in 3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery

All 11
More vulnerabilities in 3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery
SeverityVulnerabilityCVEPublished
Medium5.3Unauthenticated Information Exposure
≤1.16.20Update to 1.16.21
CVE-2026-74007
Medium5.3Missing Authorization to Unauthenticated Private/Draft Flipbook Data Exposure
≤1.16.17Update to 1.16.18
CVE-2026-1314
Medium5.3Unauthenticated Sensitive Information Exposure
≤1.16.16Update to 1.16.17
CVE-2025-58226
Medium6.4Lite Edition <= 1.16.15 - Authenticated (Contributor+) Stored Cross-Site Scripting via style and mode Parameters
≤1.16.15Update to 1.16.16
CVE-2025-5289
Medium4.4Authenticated (Editor+) Stored Cross-Site Scripting
≤1.15.6Update to 1.15.7
CVE-2024-43152

Same weakness (Information Exposure)

All Information Exposure
Other Information Exposure vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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