HomeWordPress vulnerabilitiesPDF.js Viewer
PDF.js Viewer vulnerabilities
PDF.js Viewer has 2 known vulnerabilities in this database. The most recent published record is dated 6 Feb 2023.
- Known vulnerabilities
- 2
- Active installs
- 20,000+
- Latest version
- 3.1.1
- Last updated
- 21 Apr 2026
- Most recent
- 6 Feb 2023
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Cross-site scripting (XSS) CVE-2022-4670 | Medium 5.4 | Before 2.1.8 | Fixed in 2.1.8 | 6 Feb 2023 |
| Cross-site scripting (XSS) CVE-2021-24759 | Medium 5.4 | Before 2.0.2 | Fixed in 2.0.2 | 6 Dec 2021 |
Read the published descriptions
- CVE-2022-4670, 6 Feb 2023
- The PDF.js Viewer WordPress plugin before 2.1.8 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks. CVE record
- CVE-2021-24759, 6 Dec 2021
- The PDF.js Viewer WordPress plugin before 2.0.2 does not escape some of its shortcode and Gutenberg Block attributes, which could allow users with a role as low as Contributor to to perform Cross-Site Scripting attacks CVE record
What to do if you run PDF.js Viewer
If you run PDF.js Viewer, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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