CVE-2016-4566

Cross-site scripting (XSS) vulnerability in plupload.flash.swf in Plupload before 2.1.9, as used...

6.1 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

6.00%Down 0.3 points since Feb 4, 2022

What each source reports

NVD Score used 6.1

Record: CVE-2016-4566
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-4566
Updated: 2026-11-02

EUVDEUVD-2016-5553 No score

Record: EUVD-2016-5553
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cv88-x229-26m4 6.1

Cross-site scripting (XSS) vulnerability in plupload.flash.swf in Plupload before 2.1.9, as used...

Record: GHSA-cv88-x229-26m4
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 6.1

Record: CVE-2016-4566
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2016-4566 6.1

Record: DEBIAN-CVE-2016-4566
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-4566 6.1

Record: UBUNTU-CVE-2016-4566
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wordpress` Debian:12	before 4.5.2+dfsg-1	4.5.2+dfsg-1
`wordpress` Debian:13	before 4.5.2+dfsg-1	4.5.2+dfsg-1
`wordpress` Debian:14	before 4.5.2+dfsg-1	4.5.2+dfsg-1
`wordpress` Ubuntu:16.04:LTS	All versions, plus listed versions 4.3+dfsg-14.3.1+dfsg-14.4+dfsg-14.4.1+dfsg-14.4.2+dfsg-14.4.2+dfsg-1ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-4566 is a medium vulnerability (CVSS 6.1) in Plupload, published May 22, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.00%, the 93rd percentile. Fixed in wordpress 4.5.2+dfsg-1.

References

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