{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/spectra-gutenberg-blocks--website-builder-for-the-block-editor-plugin/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-7465"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin"],"_cs_severities":["high"],"_cs_tags":["wordpress","rce","plugin","authenticated"],"_cs_type":"advisory","_cs_vendors":["WordPress"],"content_html":"\u003cp\u003eThe Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress, in versions up to and including 2.19.25, contains a remote code execution vulnerability (CVE-2026-7465). This vulnerability allows authenticated attackers with Contributor-level access or higher to execute arbitrary code on the server. The attack involves embedding a specific two-block payload within WordPress post content. The vulnerability stems from insecure handling of block rendering callbacks, which can be manipulated by an attacker to achieve code execution. This is a significant risk for WordPress sites using the Spectra Gutenberg Blocks plugin, potentially leading to full server compromise.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker authenticates to a WordPress site with at least Contributor-level privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker creates a new post or edits an existing one.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious payload consisting of two specially designed blocks.\u003c/li\u003e\n\u003cli\u003eThe first block registers a fake block type with a name prefixed with \u003ccode\u003euagb/\u003c/code\u003e. This block definition includes a \u003ccode\u003erender_callback\u003c/code\u003e function specified by the attacker.\u003c/li\u003e\n\u003cli\u003eThe second block within the same post utilizes the same fake block type defined in the previous step.\u003c/li\u003e\n\u003cli\u003eWhen the post is rendered, WordPress iterates through the blocks sequentially.\u003c/li\u003e\n\u003cli\u003eUpon encountering the second malicious block, WordPress\u0026rsquo;s block rendering mechanism calls the attacker-defined \u003ccode\u003erender_callback\u003c/code\u003e function via \u003ccode\u003ecall_user_func()\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe attacker-controlled \u003ccode\u003erender_callback\u003c/code\u003e executes arbitrary PHP code on the server, leading to remote code execution.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation allows an attacker to execute arbitrary code on the affected WordPress server. This could lead to complete compromise of the web server, including the ability to read sensitive data, modify website content, install backdoors, or use the server as a staging ground for further attacks. The vulnerability affects all WordPress sites using the Spectra Gutenberg Blocks plugin versions up to and including 2.19.25.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the latest patch or upgrade the Spectra Gutenberg Blocks plugin to a version greater than 2.19.25 to remediate CVE-2026-7465.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u0026ldquo;Detect CVE-2026-7465 Exploitation Attempt via Suspicious uagb Block Registration\u0026rdquo; to identify attempts to register malicious blocks with \u003ccode\u003euagb/\u003c/code\u003e prefixes.\u003c/li\u003e\n\u003cli\u003eMonitor WordPress logs for unusual activity related to block rendering, especially involving the \u003ccode\u003ecall_user_func()\u003c/code\u003e function.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-30T10:17:09Z","date_published":"2026-05-30T10:17:09Z","id":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-7465-wordpress-rce/","summary":"The Spectra Gutenberg Blocks WordPress plugin is vulnerable to remote code execution, allowing authenticated attackers with Contributor access or higher to execute arbitrary code by crafting a malicious two-block payload within post content.","title":"CVE-2026-7465: Spectra Gutenberg Blocks WordPress Plugin Remote Code Execution","url":"https://feed.craftedsignal.io/briefs/2026-05-cve-2026-7465-wordpress-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Spectra Gutenberg Blocks – Website Builder for the Block Editor Plugin","version":"https://jsonfeed.org/version/1.1"}