{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-6443/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-6443"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Accordion and Accordion Slider"],"_cs_severities":["critical"],"_cs_tags":["wordpress","backdoor","plugin","spam","cve-2026-6443"],"_cs_type":"advisory","_cs_vendors":["WordPress"],"content_html":"\u003cp\u003eIn April 2026, the WordPress plugin 'Accordion and Accordion Slider' version 1.4.6 was found to contain a malicious backdoor. This occurred after the plugin was sold to an unknown threat actor who systematically injected backdoors into multiple WordPress plugins they acquired. The purpose of this backdoor is to maintain persistent access to compromised websites and inject spam content, potentially damaging the reputation and SEO ranking of affected sites. The vulnerability is tracked as CVE-2026-6443 and has a CVSS v3.1 score of 9.8, indicating a critical risk. Defenders should immediately identify and remove the affected plugin version from their WordPress installations.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003ePlugin Acquisition:\u003c/strong\u003e The threat actor purchases the 'Accordion and Accordion Slider' plugin.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eBackdoor Injection:\u003c/strong\u003e Malicious code is embedded within the plugin's codebase.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePlugin Update/Distribution:\u003c/strong\u003e The compromised version 1.4.6 is released and distributed to users via the WordPress plugin repository or other distribution channels.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eInstallation/Update:\u003c/strong\u003e Users install or update to the backdoored version of the plugin on their WordPress sites.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eBackdoor Activation:\u003c/strong\u003e The injected code executes within the WordPress environment, establishing a persistent backdoor.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eC2 Communication:\u003c/strong\u003e The backdoor establishes communication with a command-and-control (C2) server (domain/IP is unknown).\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpam Injection:\u003c/strong\u003e The attacker injects spam content into the website, potentially modifying posts, pages, or database entries.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePersistence Maintenance:\u003c/strong\u003e The backdoor ensures continued access, allowing for ongoing spam injection and potential further compromise.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation allows the attacker to inject arbitrary spam content into WordPress websites. This can lead to defacement, SEO penalties, and reputational damage. Given the widespread use of WordPress and the compromised plugin, a significant number of websites could be affected. The injected spam can vary in nature and content, potentially leading to further malicious activities.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIdentify installations of 'Accordion and Accordion Slider' version 1.4.6 and immediately remove the plugin to prevent further compromise (reference: CVE-2026-6443).\u003c/li\u003e\n\u003cli\u003eMonitor web server logs (category: webserver, product: linux/windows) for unexpected POST requests or modifications to WordPress core files, indicative of backdoor activity.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026quot;Detect Suspicious WordPress Plugin Activity\u0026quot; to identify potentially malicious plugin behavior (reference: rules).\u003c/li\u003e\n\u003cli\u003eReview WordPress database content for injected spam or unauthorized modifications (reference: overview).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-wordpress-backdoor/","summary":"A malicious actor injected a backdoor into the WordPress 'Accordion and Accordion Slider' plugin version 1.4.6 after purchasing it, allowing for persistence and spam injection.","title":"Compromised WordPress Plugin 'Accordion and Accordion Slider' Delivers Backdoor","url":"https://feed.craftedsignal.io/briefs/2024-01-wordpress-backdoor/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-6443","version":"https://jsonfeed.org/version/1.1"}