CVE-2026-27416

PDF Poster – Display PDF Files with Custom Viewer <= 2.4.1 - Missing Authorization

mediumMissing Authorization

5.3

CVSS Score

5.3

CVSS Score

medium

Severity

2.5.0

Patched in

Time to patch

Description

The PDF Poster – Display PDF Files with Custom Viewer plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 2.4.1. This makes it possible for unauthenticated attackers to perform an unauthorized action.

CVSS Vector Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

None

Confidentiality

Low

Integrity

None

Availability

Technical Details

Affected versions<=2.4.1

PublishedMay 7, 2026

Last updatedMay 11, 2026

Affected pluginpdf-poster

Source Code

WordPress.org SVN

Vulnerable v2.4.1

Browse source Download .zip

Patched

Patched version not available.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/bcf7af0d-6df8-4f90-a244-f942f678434f?source=api-prod

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