XSS in WordPress
CVE-2020-11026
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.021 (80.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- WordPress — versions >= 4.2.0, < 4.2.27, >= 5.3.0, < 5.3.3, >= 3.8.0, < 3.8.33
- Debian Linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/support/wordpress-version/version-5-4-1/ (Release Notes, Vendor Advisory)
- github.com/WordPress/wordpress-develop/security/advisories/GHSA-3gw2-4656-pfr2 (Third Party Advisory)
- www.debian.org/security/2020/dsa-4677 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/05/msg00011.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-11026?
- CVE-2020-11026 is a high-severity vulnerability in WordPress, classified under CWE-707. CVSS score: 8.7/10. Published 2020-04-30.
- How severe is CVE-2020-11026?
- High severity. CVSS v3 base score is 8.7 out of 10.
- Is CVE-2020-11026 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.