THREATPORT/VULNERABILITY/CVE-2020-15299
MEDIUM SEVERITY

CVE-2020-15299

Kingcomposer vulnerability

CVSS
6.1
EPSS
47.0%
EPSS pct
99th
Exploited
No known
A reflected Cross-Site Scripting (XSS) Vulnerability in the KingComposer plugin through 2.9.4 for WordPress allows remote attackers to trick a victim into submitting an install_online_preset AJAX request containing base64-encoded JavaScript (in the kc-online-preset-data POST parameter) that is executed in the victim's browser.
Affected vendor
King Theme
Affected product
Kingcomposer
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness type (CWE)
  • CWE-79 — Cross-Site Scripting (XSS)
Published
2020-07-09

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 47.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2020-15299

  • Confirm whether King Theme Kingcomposer is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-15299.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-15299

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-15299 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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