What’s Vulnerable › Vulnerabilities

CVE-2021-24961: WordPress File Upload < 4.16.3 - Contributor+ Stored Cross-Site Scripting via Shortcode

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-03-07 · updated 2026-06-17
• Weakness: CWE-79

Description

The WordPress File Upload WordPress plugin before 4.16.3, wordpress-file-upload-pro WordPress plugin before 4.16.3 does not escape some of its shortcode argument, which could allow users with a role as low as Contributor to perform Cross-Site Scripting attacks

Affected products

• nickboss Iptanus File Upload: before 4.16.3 — fixed in 4.16.3
• Iptanus Wordpress File Upload Pro: before 4.16.3 — fixed in 4.16.3

How to fix

Upgrade to a fixed version: nickboss Iptanus File Upload 4.16.3; Iptanus Wordpress File Upload Pro 4.16.3. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/2677722
• https://wpscan.com/vulnerability/c911bbbd-0196-4e3d-ada3-4efb8a339954
• https://plugins.trac.wordpress.org/changeset/2677722
• https://wpscan.com/vulnerability/c911bbbd-0196-4e3d-ada3-4efb8a339954

Get alerted when CVE-2021-24961 or the next vulnerability affects your stack