CVE-2020-11026

Description

In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with privileges to upload files. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).

How to fix CVE-2020-11026

To remediate CVE-2020-11026, upgrade the affected package to a fixed version below.

• —upgrade to 3.7.33 or later
• —upgrade to 3.7.33 or later
• —upgrade to 5.4.1+dfsg1-1 or later
• —upgrade to 4.1.30+dfsg-0+deb8u1 or later

Is CVE-2020-11026 being exploited?

Low — EPSS is 4.4%, meaning exploitation activity has not been observed at scale.

Affected packages (4)

• >= 3.7.0, < 3.7.33, >= 3.8.0, < 3.8.33, >= 3.9.0, < 3.9.31, >= 4.0.0, < 4.0.30, >= 4.1.0, < 4.1.30, >= 4.2.0, < 4.2.27, >= 4.3.0, < 4.3.23, >= 4.4.0, < 4.4.22, >= 4.5.0, < 4.5.21, >= 4.6.0, < 4.6.18, >= 4.7.0, < 4.7.17, >= 4.8.0, < 4.8.13, >= 4.9.0, < 4.9.14, >= 5.0.0, < 5.0.9, >= 5.1.0, < 5.1.5, >= 5.2.0, < 5.2.6, >= 5.3.0, < 5.3.3, >= 5.4.0, < 5.4.1
• >= 3.7.0, < 3.7.33, >= 3.8.0, < 3.8.33, >= 3.9.0, < 3.9.31, >= 4.0.0, < 4.0.30, >= 4.1.0, < 4.1.30, >= 4.2.0, < 4.2.27, >= 4.3.0, < 4.3.23, >= 4.4.0, < 4.4.22, >= 4.5.0, < 4.5.21, >= 4.6.0, < 4.6.18, >= 4.7.0, < 4.7.17, >= 4.8.0, < 4.8.13, >= 4.9.0, < 4.9.14, >= 5.0.0, < 5.0.9, >= 5.1.0, < 5.1.5, >= 5.2.0, < 5.2.6, >= 5.3.0, < 5.3.3, >= 5.4.0, < 5.4.1
• from 0, < 5.4.1+dfsg1-1
• from 0, < 4.1.30+dfsg-0+deb8u1

CVSS scores

References (6)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2020-11026
• WEBgithub.com/WordPress/wordpress-develop/security/advisories/GHSA-3gw2-4656-pfr2
• WEBlists.debian.org/debian-lts-announce/2020/05/msg00011.html
• WEBnvd.nist.gov/vuln/detail/CVE-2020-11026