CVE-2016-4567: Cross-site scripting (XSS) vulnerability in flash/FlashMediaElement.as in MediaElement.js before 2.21.0, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HT

medium Affects WordPress core, contao-components/mediaelement, contao/core. Feed 2026.10.29.3, updated 2026-10-29; published 2016-05-22; advisory modified 2026-06-17.

Cross-site scripting (XSS) vulnerability in flash/FlashMediaElement.as in MediaElement.js before 2.21.0, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HT

Package: WordPress core WordPress
Affected versions: <=4.5.1
Fixed in: no fix recorded
Severity: medium CVSS 6.1
Exploitation: not on CISA KEV · EPSS 7% (94.4th percentile)
Published: 2016-05-22
Source: nvd

References

MediaElement Vulnerable to Reflected XSS

Package: contao-components/mediaelement Composer
Affected versions: >=2.14.2 and <2.21.1
Fixed in: 2.21.1
Severity: medium CVSS 6.1
Exploitation: not on CISA KEV · EPSS 7% (94.4th percentile)
Published: 2022-05-17
Source: osv.dev

References

MediaElement Vulnerable to Reflected XSS

Package: contao/core Composer
Affected versions: >=3.0.0 and <3.5.15
Fixed in: 3.5.15
Severity: medium CVSS 6.1
Exploitation: not on CISA KEV · EPSS 7% (94.4th percentile)
Published: 2022-05-17
Source: osv.dev

References

CWE-79

NVD record WordPress core advisories contao-components/mediaelement advisories contao/core advisories

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