プラットフォーム
wordpress
コンポーネント
instagram-slider-widget
修正版
2.3.3
CVE-2026-39507 describes a Stored Cross-Site Scripting (XSS) vulnerability within the Social Slider Feed plugin for WordPress. This flaw allows unauthenticated attackers to inject arbitrary web scripts, potentially leading to account compromise, data theft, or defacement of the website. The vulnerability impacts versions of the plugin up to and including 2.3.2, and a patch is available in version 2.3.3.
The impact of this XSS vulnerability is significant. An attacker could inject malicious JavaScript code that executes in the context of a user's browser when they visit a page containing the injected script. This could allow the attacker to steal session cookies, redirect users to phishing sites, or modify the content of the page. The attacker does not need to be authenticated to exploit this vulnerability, making it particularly dangerous. Successful exploitation could lead to widespread compromise of user accounts and sensitive data stored within the WordPress site.
CVE-2026-39507 was publicly disclosed on 2026-04-16. There are currently no known public exploits or active campaigns targeting this specific vulnerability. The vulnerability is not listed on the CISA KEV catalog at the time of writing. The relatively recent disclosure suggests that exploitation is possible but not widespread.
Websites using the Social Slider Feed plugin, particularly those running older versions (≤2.3.2), are at risk. Shared hosting environments where multiple websites share the same server infrastructure are especially vulnerable, as a compromise of one site could potentially lead to the compromise of others.
• wordpress / composer / npm:
grep -r "<script" /var/www/html/wp-content/plugins/social-slider-feed/• wordpress / composer / npm:
wp plugin list --status=inactive | grep 'social-slider-feed'• wordpress / composer / npm:
wp plugin update social-slider-feed --all• generic web: Check for unusual JavaScript behavior or unexpected redirects on pages utilizing the Social Slider Feed plugin.
disclosure
エクスプロイト状況
CVSS ベクトル
The primary mitigation for CVE-2026-39507 is to immediately upgrade the Social Slider Feed plugin to version 2.3.3 or later. If upgrading is not immediately feasible due to compatibility issues or testing requirements, consider implementing a Web Application Firewall (WAF) rule to filter out potentially malicious input. Specifically, look for patterns associated with JavaScript injection attempts. Additionally, carefully review and sanitize any user-supplied data before displaying it on the website to prevent future XSS vulnerabilities. After upgrading, confirm the fix by attempting to inject a simple JavaScript payload (e.g., <script>alert('XSS')</script>) through the plugin’s input fields and verifying that it does not execute.
バージョン2.3.3、またはそれ以降の修正されたバージョンにアップデートしてください
脆弱性分析と重要アラートをメールでお届けします。
CVE-2026-39507 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the Social Slider Feed plugin for WordPress versions up to 2.3.2, allowing attackers to inject malicious scripts.
You are affected if you are using the Social Slider Feed plugin version 2.3.2 or earlier. Upgrade to 2.3.3 or later to mitigate the risk.
Upgrade the Social Slider Feed plugin to version 2.3.3 or later. Consider a WAF rule as a temporary workaround if immediate upgrade is not possible.
There are currently no known public exploits or active campaigns targeting this vulnerability, but exploitation is possible.
Refer to the plugin developer's website or WordPress plugin repository for the official advisory and update information.
依存関係ファイルをアップロードすれば、このCVEや他のCVEがあなたに影響するか即座にわかります。