UBUNTU-CVE-2021-39201

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Source
https://ubuntu.com/security/CVE-2021-39201
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-39201.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-39201
Upstream
Published
2021-09-09T22:15:00Z
Modified
2025-09-08T16:47:18Z
Severity
  • 7.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N CVSS Calculator
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. ### Impact The issue allows an authenticated but low-privileged user (like contributor/author) to execute XSS in the editor. This bypasses the restrictions imposed on users who do not have the permission to post unfiltered_html. ### Patches This has been patched in WordPress 5.8, and will be pushed to older versions via minor releases (automatic updates). It's strongly recommended that you keep auto-updates enabled to receive the fix. ### References https://wordpress.org/news/category/releases/ https://hackerone.com/reports/1142140 ### For more information If you have any questions or comments about this advisory: * Open an issue in HackerOne

References

Affected packages

Ubuntu:22.04:LTS

wordpress

Package

Name
wordpress
Purl
pkg:deb/ubuntu/wordpress@5.8.3+dfsg1-1ubuntu1.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.7.1+dfsg1-2ubuntu1
5.8.1+dfsg1-2ubuntu1
5.8.2+dfsg1-1ubuntu1
5.8.3+dfsg1-1ubuntu1
5.8.3+dfsg1-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.8.3+dfsg1-1ubuntu1.1",
            "binary_name": "wordpress"
        },
        {
            "binary_version": "5.8.3+dfsg1-1ubuntu1.1",
            "binary_name": "wordpress-l10n"
        },
        {
            "binary_version": "5.8.3+dfsg1-1ubuntu1.1",
            "binary_name": "wordpress-theme-twentynineteen"
        },
        {
            "binary_version": "5.8.3+dfsg1-1ubuntu1.1",
            "binary_name": "wordpress-theme-twentytwenty"
        },
        {
            "binary_version": "5.8.3+dfsg1-1ubuntu1.1",
            "binary_name": "wordpress-theme-twentytwentyone"
        }
    ]
}

Ubuntu:24.04:LTS

wordpress

Package

Name
wordpress
Purl
pkg:deb/ubuntu/wordpress@6.4.3+dfsg1-1ubuntu1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.2+dfsg1-1ubuntu1
6.4.3+dfsg1-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.4.3+dfsg1-1ubuntu1",
            "binary_name": "wordpress"
        },
        {
            "binary_version": "6.4.3+dfsg1-1ubuntu1",
            "binary_name": "wordpress-l10n"
        },
        {
            "binary_version": "6.4.3+dfsg1-1ubuntu1",
            "binary_name": "wordpress-theme-twentytwentyfour"
        },
        {
            "binary_version": "6.4.3+dfsg1-1ubuntu1",
            "binary_name": "wordpress-theme-twentytwentythree"
        },
        {
            "binary_version": "6.4.3+dfsg1-1ubuntu1",
            "binary_name": "wordpress-theme-twentytwentytwo"
        }
    ]
}

Ubuntu:25.04

wordpress

Package

Name
wordpress
Purl
pkg:deb/ubuntu/wordpress@6.7.2+dfsg1-1.1ubuntu1?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.4.3+dfsg1-1ubuntu1
6.7.2+dfsg1-1.1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.7.2+dfsg1-1.1ubuntu1",
            "binary_name": "wordpress"
        },
        {
            "binary_version": "6.7.2+dfsg1-1.1ubuntu1",
            "binary_name": "wordpress-l10n"
        },
        {
            "binary_version": "6.7.2+dfsg1-1.1ubuntu1",
            "binary_name": "wordpress-theme-twentytwentyfive"
        },
        {
            "binary_version": "6.7.2+dfsg1-1.1ubuntu1",
            "binary_name": "wordpress-theme-twentytwentyfour"
        },
        {
            "binary_version": "6.7.2+dfsg1-1.1ubuntu1",
            "binary_name": "wordpress-theme-twentytwentythree"
        }
    ]
}

Ubuntu:Pro:16.04:LTS

wordpress

Package

Name
wordpress
Purl
pkg:deb/ubuntu/wordpress@4.4.2+dfsg-1ubuntu1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.3+dfsg-1
4.3.1+dfsg-1
4.4+dfsg-1
4.4.1+dfsg-1
4.4.2+dfsg-1
4.4.2+dfsg-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.4.2+dfsg-1ubuntu1",
            "binary_name": "wordpress"
        },
        {
            "binary_version": "4.4.2+dfsg-1ubuntu1",
            "binary_name": "wordpress-l10n"
        },
        {
            "binary_version": "4.4.2+dfsg-1ubuntu1",
            "binary_name": "wordpress-theme-twentyfifteen"
        },
        {
            "binary_version": "4.4.2+dfsg-1ubuntu1",
            "binary_name": "wordpress-theme-twentyfourteen"
        },
        {
            "binary_version": "4.4.2+dfsg-1ubuntu1",
            "binary_name": "wordpress-theme-twentysixteen"
        }
    ]
}

Ubuntu:Pro:18.04:LTS

wordpress

Package

Name
wordpress
Purl
pkg:deb/ubuntu/wordpress@4.9.5+dfsg1-1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.8.2+dfsg-2
4.8.3+dfsg-1
4.9.1+dfsg-1
4.9.2+dfsg-1
4.9.4+dfsg-1
4.9.5+dfsg1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.9.5+dfsg1-1",
            "binary_name": "wordpress"
        },
        {
            "binary_version": "4.9.5+dfsg1-1",
            "binary_name": "wordpress-l10n"
        },
        {
            "binary_version": "4.9.5+dfsg1-1",
            "binary_name": "wordpress-theme-twentyfifteen"
        },
        {
            "binary_version": "4.9.5+dfsg1-1",
            "binary_name": "wordpress-theme-twentyseventeen"
        },
        {
            "binary_version": "4.9.5+dfsg1-1",
            "binary_name": "wordpress-theme-twentysixteen"
        }
    ]
}

Ubuntu:Pro:20.04:LTS

wordpress

Package

Name
wordpress
Purl
pkg:deb/ubuntu/wordpress@5.3.2+dfsg1-1ubuntu1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.2.2+dfsg1-1
5.2.4+dfsg1-1
5.3.2+dfsg1-1
5.3.2+dfsg1-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.3.2+dfsg1-1ubuntu1",
            "binary_name": "wordpress"
        },
        {
            "binary_version": "5.3.2+dfsg1-1ubuntu1",
            "binary_name": "wordpress-l10n"
        },
        {
            "binary_version": "5.3.2+dfsg1-1ubuntu1",
            "binary_name": "wordpress-theme-twentynineteen"
        },
        {
            "binary_version": "5.3.2+dfsg1-1ubuntu1",
            "binary_name": "wordpress-theme-twentyseventeen"
        },
        {
            "binary_version": "5.3.2+dfsg1-1ubuntu1",
            "binary_name": "wordpress-theme-twentysixteen"
        }
    ]
}