{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/sp-page-builder/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:ollyo:sp_page_builder:*:*:*:*:-:joomla\\!:*:*"],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-48908"}],"_cs_exploited":true,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["SP Page Builder"],"_cs_severities":["critical"],"_cs_tags":["web-exploit","cve","rce","php","cisa-kev"],"_cs_type":"threat","_cs_vendors":["JoomShaper"],"content_html":"\u003cp\u003eJoomShaper SP Page Builder, a popular Joomla extension, is affected by a critical vulnerability, CVE-2026-48908, that permits unauthenticated users to upload arbitrary files with dangerous extensions. This flaw allows attackers to bypass file type restrictions, facilitating the upload of malicious PHP web shells directly onto the affected server. Once uploaded, these PHP files can be executed, granting the attacker remote code execution capabilities. This vulnerability has been added to CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating that it is either actively exploited in the wild or poses a significant risk that warrants immediate remediation. Organizations using affected versions of SP Page Builder are at high risk of server compromise, data exfiltration, or further network penetration. The CISA KEV listing underscores the urgency for defenders to apply vendor patches and implement detection mechanisms for this critical flaw.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eInitial Access (Vulnerability Identification)\u003c/strong\u003e: An unauthenticated attacker identifies a publicly accessible web server running a vulnerable version of JoomShaper SP Page Builder.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eVulnerability Exploitation (Malicious File Upload)\u003c/strong\u003e: The attacker crafts a malicious HTTP POST request targeting an accessible upload function within SP Page Builder, leveraging CVE-2026-48908 to bypass file type restrictions.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePayload Delivery\u003c/strong\u003e: The attacker successfully uploads a PHP web shell (e.g., \u003ccode\u003eshell.php\u003c/code\u003e, \u003ccode\u003ebackdoor.php\u003c/code\u003e) or other dangerous file type to a publicly accessible directory on the web server (e.g., \u003ccode\u003e/images/\u003c/code\u003e, \u003ccode\u003e/media/\u003c/code\u003e, \u003ccode\u003e/uploads/\u003c/code\u003e).\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePersistence (Web Shell Placement)\u003c/strong\u003e: The malicious PHP file is stored on the server, establishing a persistent foothold that can be accessed later.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eExecution (Web Shell Activation)\u003c/strong\u003e: The attacker then sends a subsequent HTTP GET or POST request directly to the URL of the newly uploaded PHP web shell to trigger its execution.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eRemote Code Execution (RCE)\u003c/strong\u003e: Upon activation, the web shell executes arbitrary PHP functions and system commands, providing the attacker with control over the underlying operating system.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003ePost-Exploitation Activity\u003c/strong\u003e: The attacker can use the RCE to perform reconnaissance, escalate privileges, exfiltrate sensitive data, deploy additional malware (e.g., ransomware), or establish further command and control infrastructure.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eImpact\u003c/strong\u003e: The successful execution of arbitrary PHP code leads to full server compromise, unauthorized data access, or disruption of services.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-48908 leads to immediate and critical impact, enabling unauthenticated attackers to achieve remote code execution on the web server hosting JoomShaper SP Page Builder. This allows for full server compromise, including unauthorized access to sensitive data, modification or deletion of website content, and the ability to pivot to other systems within the network. Given its presence on CISA's KEV catalog, this vulnerability poses a severe threat of active exploitation in the wild, potentially affecting numerous organizations across various sectors, especially those relying on Joomla for their web presence. The ultimate consequences can range from data breaches and defacement to complete business disruption and the deployment of ransomware.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003ePatch CVE-2026-48908 immediately\u003c/strong\u003e on all internet-facing JoomShaper SP Page Builder instances in accordance with vendor instructions.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eDeploy the Sigma rules in this brief\u003c/strong\u003e to your SIEM and tune them for your environment to detect attempts to exploit CVE-2026-48908.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eReview web server logs\u003c/strong\u003e for unusual \u003ccode\u003ePOST\u003c/code\u003e requests targeting upload paths and \u003ccode\u003eGET\u003c/code\u003e/\u003ccode\u003ePOST\u003c/code\u003e requests to unexpected \u003ccode\u003e.php\u003c/code\u003e files in user-writable directories, as described in the detection rules.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eImplement strict file upload validation\u003c/strong\u003e (type, size, content) at the web server and application layers to prevent similar vulnerabilities.\u003c/li\u003e\n\u003cli\u003e\u003cstrong\u003eMonitor server logs for unusual process creation\u003c/strong\u003e or network connections originating from the web server process, indicative of post-exploitation activity following successful RCE.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-07-07T17:04:51Z","date_published":"2026-07-07T17:04:51Z","id":"https://feed.craftedsignal.io/briefs/2026-07-joomshaper-sp-page-builder-rce/","summary":"A critical unrestricted file upload vulnerability, CVE-2026-48908, in JoomShaper SP Page Builder allows unauthenticated attackers to upload arbitrary files of dangerous types, specifically PHP code, which can be executed on the server to achieve remote code execution and full system compromise.","title":"CVE-2026-48908 - JoomShaper SP Page Builder Unrestricted File Upload leading to RCE","url":"https://feed.craftedsignal.io/briefs/2026-07-joomshaper-sp-page-builder-rce/"}],"language":"en","title":"CraftedSignal Threat Feed - SP Page Builder","version":"https://jsonfeed.org/version/1.1"}