PT-2020-14340 · WordPress · Kingcomposer

Published 2020-07-09 · Updated 2020-07-13 · CVE-2020-15299

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions KingComposer plugin versions through 2.9.4 for WordPress

Description A reflected Cross-Site Scripting issue allows remote attackers to trick a victim into submitting an install online preset AJAX request containing base64-encoded JavaScript, executed in the victim's browser. The kc-online-preset-data POST parameter is used to inject malicious JavaScript.

Recommendations For KingComposer plugin versions through 2.9.4, consider disabling the install online preset AJAX request functionality until a patch is available. Restrict access to the kc-online-preset-data parameter to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-15299

Affected Products

Kingcomposer

References · 4

• 🔥 https://wordfence.com/blog/2020/07/xss-flaw-impacting-100000-sites-patched-in-kingcomposer · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-15299 · Security Note
• https://osv.dev/vulnerability/CVE-2020-15299 · Vendor Advisory
• https://t.me/cvenotify/4961 · Telegram Post