CVE-2016-4566
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.
Does this matter?
Lower severity and a low EPSS score (6.00%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.0
- 6.1 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 6.00% probability · 93th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- wordpress/wordpress · plupload/plupload
- Source
- cve@mitre.org
EPSS moved from 8.2% on 21 September 2026 to 6.0% on 26 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.