CVE-2016-4566

Name: CVE-2016-4566
Creator: NVD / NIST
Published: 2016-05-22T01:59:30.247+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.36%

Last modified Jun 17, 2026

CVE-2016-4566 is a vulnerability of currently unknown severity. Cross-site scripting (XSS) vulnerability in plupload.flash.swf in Plupload before 2.1.9, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via a Same-Origin Method Execution (SOME) attack.. EPSS estimates a 5.36% chance of exploitation in the next 30 days.

Description

Cross-site scripting (XSS) vulnerability in plupload.flash.swf in Plupload before 2.1.9, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via a Same-Origin Method Execution (SOME) attack.

Metrics

EPSS Probability

5.36%

91.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Wordpress	Wordpress	<= 4.5.1
Plupload	Plupload	<= 2.1.8

References

http://www.openwall.com/lists/oss-security/2016/05/07/2
http://www.plupload.com/punbb/viewtopic.php?pid=28690Vendor Advisory
http://www.securitytracker.com/id/1035818Third Party Advisory, VDB Entry
https://codex.wordpress.org/Version_4.5.2Patch
https://core.trac.wordpress.org/changeset/37382/Patch
https://gist.github.com/cure53/09a81530a44f6b8173f545accc9ed07eThird Party Advisory
https://wordpress.org/news/2016/05/wordpress-4-5-2/Patch, Vendor Advisory
https://wpvulndb.com/vulnerabilities/8489Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/07/2
http://www.plupload.com/punbb/viewtopic.php?pid=28690Vendor Advisory
http://www.securitytracker.com/id/1035818Third Party Advisory, VDB Entry
https://codex.wordpress.org/Version_4.5.2Patch
https://core.trac.wordpress.org/changeset/37382/Patch
https://gist.github.com/cure53/09a81530a44f6b8173f545accc9ed07eThird Party Advisory
https://wordpress.org/news/2016/05/wordpress-4-5-2/Patch, Vendor Advisory
https://wpvulndb.com/vulnerabilities/8489Third Party Advisory

Timeline

Published: May 22, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4566?

How severe is CVE-2016-4566?

Severity scoring for CVE-2016-4566 is pending analysis. The EPSS model estimates a 5.36% probability of exploitation in the next 30 days.

How do I fix CVE-2016-4566?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-4566?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST