| Name | CVE-2020-4050 |
| Description | In affected versions of WordPress, misuse of the `set-screen-option` filter's return value allows arbitrary user meta fields to be saved. It does require an admin to install a plugin that would misuse the filter. Once installed, it can be leveraged by low privileged users. 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) | 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.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| wordpress | source | wheezy | (unfixed) | end-of-life | ||
| 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/47951
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-4vpv-fgg2-gcqc
https://github.com/WordPress/wordpress-develop/commit/b8dea76b495f0072523106c6ec46b9ea0d2a0920
https://core.trac.wordpress.org/ticket/50392 (regression fix)