{"id":52300,"date":"2025-06-16T00:08:46","date_gmt":"2025-06-16T00:08:46","guid":{"rendered":""},"modified":"2025-09-08T17:19:02","modified_gmt":"2025-09-08T23:19:02","slug":"cve-2025-31429-untrusted-data-deserialization-vulnerability-in-pressgrid-theme","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-31429-untrusted-data-deserialization-vulnerability-in-pressgrid-theme\/","title":{"rendered":"<strong>CVE-2025-31429: Untrusted Data Deserialization Vulnerability in PressGrid Theme<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The vulnerability identified as CVE-2025-31429 poses a significant cybersecurity threat to users of the PressGrid &#8211; Frontend Publish Reaction &#038; Multimedia Theme. This vulnerability, specifically a Deserialization of Untrusted Data vulnerability, enables an attacker to inject harmful objects into the system. This is a serious concern because it allows unauthorized individuals to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5527-critical-vulnerability-exposing-potential-system-compromise-in-tenda-rx3\/\"  data-wpil-monitor-id=\"58707\">potentially compromise the system<\/a> or lead to data leakage. In the world of cybersecurity, such <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45575-critical-memory-corruption-vulnerability-in-camera-kernel\/\"  data-wpil-monitor-id=\"58563\">vulnerabilities are critical<\/a> due to their high potential for exploitation.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-31429<br \/>\nSeverity: Critical (9.8 CVSS score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21469-memory-corruption-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"59042\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-616459413\" 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>PressGrid &#8211; Frontend Publish Reaction &#038; Multimedia Theme | Up to 1.3.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21460-memory-corruption-vulnerability-in-guest-vm-buffer-processing-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"58996\">vulnerability lies in the process<\/a> of deserialization, which is the reverse of serialization &#8211; the process of converting an object into a format that can be stored or transmitted and then reconstructed later. In this case, the PressGrid theme doesn&#8217;t correctly validate or sanitize the serialized <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-27531-critical-deserialization-of-untrusted-data-vulnerability-in-apache-inlong\/\"  data-wpil-monitor-id=\"59273\">data when it&#8217;s being deserialized<\/a>. This allows an attacker with network access to inject malicious serialized data, which, when deserialized, can lead to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32106-unauthenticated-remote-code-execution-in-audiocodes-mediapack-mp-11x\/\"  data-wpil-monitor-id=\"58574\">execution of malicious code<\/a>, potentially compromising the system or leading to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1685795188\" 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>Here&#8217;s a conceptual example of how an attacker might <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24274-input-validation-issue-exploitable-via-malicious-app-on-macos\/\"  data-wpil-monitor-id=\"59607\">exploit the vulnerability using a malicious<\/a> serialized object in an HTTP POST request:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/target_endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;serialized_object&quot;: &quot;rO0ABXNyABdqYXZhLnV0aWwuaGFzaE1hcAUH2sHDFmDRAwACRgAKbG9hZEZhY3RvckkACXRocmVzaG9sZHhwP0AAAAAAAAx3CAAAABAAAAAAeHIAA2JhZC5jbGFzc3g=&quot; }<\/code><\/pre>\n<p>In this example, the `serialized_object` is a base64 encoded serialized Java object that contains <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8714-critical-postgresql-vulnerability-allowing-malicious-code-injection-by-superusers\/\"  data-wpil-monitor-id=\"80722\">malicious code<\/a>. When this data is deserialized by the vulnerable application, the malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45854-arbitrary-code-execution-vulnerability-in-jehc-bpm-2-0-1\/\"  data-wpil-monitor-id=\"58663\">code is executed<\/a>.<\/p>\n<p><strong>Mitigation<\/strong><\/p>\n<p><a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3055-critical-arbitrary-file-deletion-vulnerability-in-wp-user-frontend-pro-plugin\/\"  data-wpil-monitor-id=\"59186\">Users of the PressGrid &#8211; Frontend<\/a> Publish Reaction &#038; Multimedia Theme should apply the patch provided by the vendor as soon as possible. If a patch cannot be applied immediately, users are encouraged to implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation strategy against <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-7457-macos-authorization-model-exploit-leading-to-potential-mitm-attacks\/\"  data-wpil-monitor-id=\"80023\">potential exploits<\/a>. Regular software updates and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49002-critical-vulnerability-in-dataease-bypassing-patch-for-cve-2025-32966\/\"  data-wpil-monitor-id=\"58997\">patching remain the most effective defense against such vulnerabilities<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The vulnerability identified as CVE-2025-31429 poses a significant cybersecurity threat to users of the PressGrid &#8211; Frontend Publish Reaction &#038; Multimedia Theme. This vulnerability, specifically a Deserialization of Untrusted Data vulnerability, enables an attacker to inject harmful objects into the system. This is a serious concern because it allows unauthorized individuals to potentially compromise [&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-52300","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\/52300","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=52300"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/52300\/revisions"}],"predecessor-version":[{"id":73143,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/52300\/revisions\/73143"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=52300"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=52300"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=52300"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=52300"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=52300"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=52300"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=52300"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=52300"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=52300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}