CVE-2020-4046
What it is
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).
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account, but needs a user to act. Limited direct impact.
- Exploit odds
- 2.1% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 2.1% in the next 30 days (EPSS).
- Severity: 5.4 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.1% · EPSS, next 30 days
- Weakness
- CWE-80
- Record status
- Modified
Affected
- WordPress < 3.7.34
- WordPress < 3.8.34
- WordPress < 3.9.32
- WordPress < 4.0.31
- WordPress < 4.1.31
- WordPress < 4.2.28
- WordPress < 4.3.24
- WordPress < 4.4.23
Attack profile CVSS 3.1 · 5.4
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2020-4046.md and follow it. Check whether this project is affected by CVE-2020-4046. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- 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://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/
References
- https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rpwf-hrh2-39jf
- https://lists.debian.org/debian-lts-announce/2020/07/msg00000.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/
- https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/
- https://www.debian.org/security/2020/dsa-4709
- https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rpwf-hrh2-39jf
- https://lists.debian.org/debian-lts-announce/2020/07/msg00000.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/
- https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/
- https://www.debian.org/security/2020/dsa-4709