CVE catalog
CVE-2020-4049
wordpress: CVE-2020-4049
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.53% · Oct 25, 2026
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).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | wordpress | sid | 7.1.3+dfsg1-1 | fixed |
| Debian | wordpress | forky | 7.1.3+dfsg1-1 | fixed |
| Debian | wordpress | trixie | 6.8.7+dfsg1-0+deb13u1 | fixed |
| Debian | wordpress | trixie-security | 6.8.10+dfsg1-0+deb13u1 | fixed |
| Debian | wordpress | bookworm | 6.1.9+dfsg1-0+deb12u1 | fixed |
| Debian | wordpress | bookworm-security | 6.1.9+dfsg1-0+deb12u1 | fixed |
| Ubuntu | wordpress | 16.04 | 4.3+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 16.04 | 4.3.1+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 16.04 | 4.4+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 16.04 | 4.4.1+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 16.04 | 4.4.2+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 16.04 | 4.4.2+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | wordpress | 18.04 | 4.8.2+dfsg-2 | vulnerable |
| Ubuntu | wordpress | 18.04 | 4.8.3+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 18.04 | 4.9.1+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 18.04 | 4.9.2+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 18.04 | 4.9.4+dfsg-1 | vulnerable |
| Ubuntu | wordpress | 18.04 | 4.9.5+dfsg1-1 | vulnerable |
| Ubuntu | wordpress | 20.04 | 5.2.2+dfsg1-1 | vulnerable |
| Ubuntu | wordpress | 20.04 | 5.2.4+dfsg1-1 | vulnerable |
| Ubuntu | wordpress | 20.04 | 5.3.2+dfsg1-1 | vulnerable |
| Ubuntu | wordpress | 20.04 | 5.3.2+dfsg1-1ubuntu1 | vulnerable |
| Ubuntu | wordpress | 22.04 | 5.7.1+dfsg1-2ubuntu1 | vulnerable |
| Ubuntu | wordpress | 22.04 | 5.8.1+dfsg1-2ubuntu1 | vulnerable |
| Ubuntu | wordpress | 22.04 | 5.8.2+dfsg1-1ubuntu1 | vulnerable |
| Ubuntu | wordpress | 22.04 | 5.8.3+dfsg1-1ubuntu1 | vulnerable |
| Ubuntu | wordpress | 22.04 | 5.8.3+dfsg1-1ubuntu1.1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | wordpress | source | sid | 5.4.2+dfsg1-1 | not yet assigned | Not reported | [962685] |
| Debian | wordpress | source | forky | 5.4.2+dfsg1-1 | not yet assigned | Not reported | [962685] |
| Debian | wordpress | source | trixie | 5.4.2+dfsg1-1 | not yet assigned | Not reported | [962685] |
| Debian | wordpress | source | bookworm | 5.4.2+dfsg1-1 | not yet assigned | Not reported | [962685] |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [wordpress]Unknown
Details (4)
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- [wordpress-l10n]Unknown
Source package: [wordpress]
Details (4)
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- [wordpress-theme-twentytwentyone]Unknown
Source package: [wordpress]
Details (4)
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- [wordpress-theme-twentytwentythree]Unknown
Source package: [wordpress]
Details (4)
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
- [wordpress-theme-twentytwentytwo]Unknown
Source package: [wordpress]
Details (4)
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookwormFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
6.1.9+dfsg1-0+deb12u1· all · bookworm-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · bookworm; dsa · wordpress · debian · 12
[Debian 13 (Trixie)]
- [wordpress]Unknown
Details (6)
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.10+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.6+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
- [wordpress-l10n]Unknown
Source package: [wordpress]
Details (6)
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.10+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.6+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
- [wordpress-theme-twentytwentyfive]Unknown
Source package: [wordpress]
Details (6)
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.10+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.6+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
- [wordpress-theme-twentytwentyfour]Unknown
Source package: [wordpress]
Details (6)
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.10+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.6+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
- [wordpress-theme-twentytwentythree]Unknown
Source package: [wordpress]
Details (6)
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.3+dfsg1-0+deb13u1· all · trixieFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.10+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.6+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-securityFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
6.8.7+dfsg1-0+deb13u1· all · trixie-security · Historical versionFixed · Fixed:
5.4.2+dfsg1-1dsa · wordpress · debian · 13
Observed: