CVE-2020-36709
The Page Builder: KingComposer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via via shortcode in versions before 2.9.4 due to insufficient input sanitization and output escaping.
Does this matter?
Lower severity and a low EPSS score (0.64%). Track it; it rarely justifies an emergency change on its own.
Description
The Page Builder: KingComposer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via via shortcode in versions before 2.9.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- CVSS 3.1
- 4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.64% probability · 50th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- king-theme/page builder kingcomposer
- Source
- security@wordfence.com
EPSS 0.6% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://blog.nintechnet.com/wordpress-kingcomposer-page-builder-fixed-multiple-critical-vulnerabilities/Exploit
- https://wpsocket.com/plugin/kingcomposer/changelog/Release Notes
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6447de64-b484-4f64-ad78-7df81b5a0ed7?source=cveThird Party Advisory
- https://blog.nintechnet.com/wordpress-kingcomposer-page-builder-fixed-multiple-critical-vulnerabilities/Exploit
- https://wpsocket.com/plugin/kingcomposer/changelog/Release Notes
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6447de64-b484-4f64-ad78-7df81b5a0ed7?source=cveThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.