{"id":51223,"date":"2025-06-12T23:38:52","date_gmt":"2025-06-12T23:38:52","guid":{"rendered":""},"modified":"2025-08-09T11:03:05","modified_gmt":"2025-08-09T17:03:05","slug":"cve-2025-39358-critical-deserialization-of-untrusted-data-vulnerability-in-teastudio-pl-wp-posts-carousel","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-39358-critical-deserialization-of-untrusted-data-vulnerability-in-teastudio-pl-wp-posts-carousel\/","title":{"rendered":"<strong>CVE-2025-39358: Critical Deserialization of Untrusted Data Vulnerability in Teastudio.Pl WP Posts Carousel<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity world is facing a major challenge with the discovery of a new vulnerability, CVE-2025-39358. This vulnerability is a deserialization of untrusted data threat that affects Teastudio.Pl&#8217;s WP Posts Carousel. This WordPress plugin, widely used for creating beautiful posts carousels and sliders, has now become a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22040-race-condition-vulnerability-in-linux-kernel-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"57889\">potential door for cybercriminals to compromise systems<\/a> or leak sensitive data. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-37093-severe-authentication-bypass-vulnerability-in-hpe-storeonce-software\/\"  data-wpil-monitor-id=\"57947\">severity of this vulnerability<\/a> is compounded by the widespread use of the affected plugin, placing numerous websites and their associated data at risk.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-39358<br \/>\nSeverity: High, CVSS score 8.8<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22041-linux-kernel-vulnerability-in-ksmbd-sessions-deregister-may-lead-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"57920\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-4141597788\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>Teastudio.Pl WP Posts Carousel | n\/a through 1.3.12<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit works by taking advantage of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49214-trend-micro-endpoint-encryption-policyserver-insecure-deserialization-vulnerability\/\"  data-wpil-monitor-id=\"62757\">insecure deserialization<\/a> process within the WP Posts Carousel. The attacker submits malicious serialized <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45565-memory-corruption-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"58046\">data to the system<\/a>, which is then deserialized by the plugin. This data often contains code that, when executed, can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47167-microsoft-office-type-confusion-vulnerability-leading-to-unauthorized-local-code-execution\/\"  data-wpil-monitor-id=\"61773\">lead to various types<\/a> of attacks. In this particular case, it allows an attacker to perform an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7696-critical-php-object-injection-vulnerability-in-wordpress-plugin-integration\/\"  data-wpil-monitor-id=\"70899\">Object Injection<\/a>. This type of attack can lead to arbitrary PHP code execution, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-47668-linux-kernel-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"57521\">potentially compromising the system or leading to data<\/a> leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3089548023\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>Below is a conceptual example of how the vulnerability might be exploited. This is a sample <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5671-critical-buffer-overflow-vulnerability-in-totolink-n302r-plus-http-post-request-handler\/\"  data-wpil-monitor-id=\"59509\">HTTP request<\/a> which incorporates a malicious payload within the serialized data.<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/wp-admin\/admin-ajax.php?action=wp_ajax_nopriv_teastudio_posts_carousel HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;serializedData&quot;: &quot;O:8:\\&quot;stdClass\\&quot;:1:{s:5:\\&quot;inject\\&quot;;s:42:\\&quot;system(&#039;rm -rf \/&#039;);\\&quot;;}&quot; }<\/code><\/pre>\n<p>In the above example, the serialized data represents an object with a property <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45984-critical-command-injection-vulnerability-detected-in-blink-routers\/\"  data-wpil-monitor-id=\"61386\">&#8220;inject&#8221; that holds a system command<\/a> (`rm -rf \/`) as its value. If the target <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46584-improper-authentication-logic-vulnerability-in-file-system-module\/\"  data-wpil-monitor-id=\"57980\">system is vulnerable<\/a> and does not properly sanitize or validate the input, this command could be executed on the server, leading to a catastrophic loss of data.<\/p>\n<p><strong>How to Mitigate<\/strong><\/p>\n<p>The best way to mitigate this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49002-critical-vulnerability-in-dataease-bypassing-patch-for-cve-2025-32966\/\"  data-wpil-monitor-id=\"58912\">vulnerability is to apply the vendor-supplied patch<\/a>. If the patch is not available, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These systems can be <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-0358-privilege-escalation-vulnerability-in-vapix-device-configuration-framework\/\"  data-wpil-monitor-id=\"57888\">configured to recognize and block attempts to exploit this vulnerability<\/a>. However, this should be considered a temporary solution, and the systems should be patched as soon as the vendor provides the fix.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity world is facing a major challenge with the discovery of a new vulnerability, CVE-2025-39358. This vulnerability is a deserialization of untrusted data threat that affects Teastudio.Pl&#8217;s WP Posts Carousel. This WordPress plugin, widely used for creating beautiful posts carousels and sliders, has now become a potential door for cybercriminals to compromise systems [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-51223","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=51223"}],"version-history":[{"count":12,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51223\/revisions"}],"predecessor-version":[{"id":63483,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51223\/revisions\/63483"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=51223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=51223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=51223"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=51223"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=51223"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=51223"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=51223"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=51223"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=51223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}