| Name | CVE-2018-5776 |
| Description | WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 887596 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| wordpress (PTS) | jessie, jessie (lts) | 4.1.35+dfsg-0+deb8u1 | fixed |
| stretch (security), stretch (lts), stretch | 4.7.23+dfsg-0+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 5.0.21+dfsg1-0+deb10u1 | fixed |
| bullseye (security), bullseye | 5.7.11+dfsg1-0+deb11u1 | fixed |
| bookworm (security), bookworm | 6.1.6+dfsg1-0+deb12u1 | fixed |
| sid, trixie | 6.6.1+dfsg1-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[stretch] - wordpress <not-affected> (Vulnerable files have been removed before)
[jessie] - wordpress <not-affected> (Vulnerable files have been removed before)
[wheezy] - wordpress <not-affected> (Vulnerable files have been removed before)
For jessie and stretch version the files silverlightmediaelement.xap and
flashmediaelement.swf have been removed with the 4.1+dfsg-1 version.
sid in version 4.9.1+dfsg-1 did as well *not* have the files but track here the
final wordpress version 4.9.2 which finally removed the mediaelement files.
https://wordpress.org/news/2018/01/wordpress-4-9-2-security-and-maintenance-release/
https://github.com/WordPress/WordPress/commit/3fe9cb61ee71fcfadb5e002399296fcc1198d850