CVE-2021-39201
7.6 HIGHWordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database
Published: 2021-09-09 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 7.6 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
- CWE
- CWE-79
Affected products
| Vendor | Product |
|---|---|
| debian | debian_linux, wordpress |
| wordpress | debian_linux, wordpress |
Description
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](https://hackerone.com/wordpress)
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-39201
- [Other]https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-wh69-25hr-h94v
- [Other]https://hackerone.com/reports/1142140
- [Other]https://www.debian.org/security/2021/dsa-4985
- [Other]https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-wh69-25hr-h94v
- [Other]https://hackerone.com/reports/1142140
- [Other]https://www.debian.org/security/2021/dsa-4985
Related CVEs
Same vendor
- CVE-2026-49975 — Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP ... (7.5 HIGH)
- CVE-2026-31431 — In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly r... (7.8 HIGH)
- CVE-2026-4775 — A flaw was found in the libtiff library (7.8 HIGH)
- CVE-2026-3497 — Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions (7.5 HIGH)
- CVE-2026-2219 — It was discovered that dpkg-deb (a component of dpkg, the Debian package management system) does not properly validate the end of the dat... (7.5 HIGH)
Same CWE
- CVE-2026-12425 — Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in PowerSchool Employee Access ...
- CVE-2024-30476 — PowerStore contains a Stored Cross-Site Scripting Vulnerability in the PowerStore Manager (5.4 MEDIUM)
- CVE-2026-54198 — Unauthenticated Cross Site Scripting (XSS) in Media LIbrary Assistant <= 3.35 versions (7.1 HIGH)
- CVE-2026-54191 — Unauthenticated Cross Site Scripting (XSS) in Pods <= 3.3.8 versions (7.1 HIGH)
- CVE-2026-39437 — Unauthenticated Cross Site Scripting (XSS) in Min Max Step Quantity Limits Manager for WooCommerce <= 5.2.2 versions (7.1 HIGH)