Known vulnerabilities in PDF.js Viewer

Embed a beautiful PDF viewer into pages.

2Reported vulnerabilities

5.4Highest CVSS score

3.1.1Latest version

20,000+Active installs

What to do now

Update PDF.js Viewer to 2.1.8 or later. 2 of these have a fixed version available. Updating resolves them.

Plugin last updated: April 21, 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-2022-4670	Medium 5.4	0.6%	Before 2.1.8	`2.1.8`	February 6, 2023
CVE-2021-24759	Medium 5.4	0.6%	Before 2.0.2	`2.0.2`	December 6, 2021

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