| Name | CVE-2020-4049 |
| Description | In affected versions of WordPress, when uploading themes, the name of the theme folder can be crafted in a way that could lead to JavaScript execution in /wp-admin on the themes page. This does require an admin to upload the theme, and is low severity self-XSS. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34). |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2269-1, DLA-2371-1, DSA-4709-1 |
| Debian Bugs | 962685 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| wordpress (PTS) | buster | 5.0.15+dfsg1-0+deb10u1 | fixed |
| buster (security) | 5.0.21+dfsg1-0+deb10u1 | fixed | |
| bullseye (security), bullseye | 5.7.8+dfsg1-0+deb11u2 | fixed | |
| bookworm | 6.1.1+dfsg1-1 | fixed | |
| trixie | 6.5+dfsg1-1 | fixed | |
| sid | 6.5.2+dfsg1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| wordpress | source | jessie | 4.1.31+dfsg-0+deb8u1 | DLA-2269-1 | ||
| wordpress | source | stretch | 4.7.18+dfsg-1+deb9u1 | DLA-2371-1 | ||
| wordpress | source | buster | 5.0.10+dfsg1-0+deb10u1 | DSA-4709-1 | ||
| wordpress | source | (unstable) | 5.4.2+dfsg1-1 | 962685 |
https://core.trac.wordpress.org/changeset/47950
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-87h4-phjv-rm6p
https://github.com/WordPress/wordpress-develop/commit/404f397b4012fd9d382e55bf7d206c1317f01148