CVE-2020-15299
CVE-2020-15299 is a medium-severity vulnerability in King-theme Kingcomposer with a CVSS 3.x base score of 6.1. Its EPSS exploit-prediction score of 47% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 4.3
- EPSS exploit prediction: 47% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: King-theme Kingcomposer
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2020-15299?
- 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.
- How severe is CVE-2020-15299?
- CVE-2020-15299 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2020-15299 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 47% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-15299?
- CVE-2020-15299 affects King-theme Kingcomposer. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-15299?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-15299 published?
- CVE-2020-15299 was published on 2020-07-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:king-theme:kingcomposer:*:*:*:*:*:wordpress:*:*
More vulnerabilities in King-theme Kingcomposer
- CVE-2022-0165 — Medium (CVSS 6.1): The Page Builder KingComposer WordPress plugin through 2.9.6 does not validate the id parameter before redirecting the…
- CVE-2019-9910 — Medium (CVSS 6.1): The kingcomposer plugin 2.7.6 for WordPress has wp-admin/admin.php?page=kc-mapper id XSS.
- CVE-2021-25048 — Medium (CVSS 5.4): The KingComposer WordPress plugin through 2.9.6 does not have authorisation, CSRF and sanitisation/escaping when…
All CVEs affecting King-theme Kingcomposer →
Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities
- CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
- CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
- CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
- CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
- CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
- CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…
Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →