Known vulnerabilities in PDF Poster – let visitors read PDFs without leaving the page

PDF Poster lets you embed PDF files in WordPress using a responsive viewer and block support, including full-screen, download, and print options.

3Reported vulnerabilities

6.1Highest CVSS score

2.5.5Latest version

20,000+Active installs

What to do now

Update PDF Poster – let visitors read PDFs without leaving the page to 2.5.0 or later. 3 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 3, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVE	Severity	Exploit probability next 30 days	Affected versions	Fixed in	Published
CVE-2024-23508	Medium 6.1	0.3%	Before 2.1.18	`2.1.18`	January 31, 2024
CVE-2026-27416	Medium 5.3	0.2%	2.4.1 and earlier	`2.5.0`	May 7, 2026
CVE-2026-32416	Medium 4.3	0.2%	2.4.0 and earlier	`2.4.1`	February 25, 2026

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.