CVE-2020-4046
Published: 12 June 2020
In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. 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).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
wordpress Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Needs triage
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| lunar |
Not vulnerable
(6.0+dfsg1-1ubuntu1)
|
|
| mantic |
Not vulnerable
(6.0+dfsg1-1ubuntu1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(5.4.2+dfsg1-1)
|
|
| xenial |
Needs triage
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.4 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | Required |
| Scope | Changed |
| Confidentiality | Low |
| Integrity impact | Low |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
References
- https://core.trac.wordpress.org/changeset/47947
- https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rpwf-hrh2-39jf
- https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/
- https://www.cve.org/CVERecord?id=CVE-2020-4046
- NVD
- Launchpad
- Debian