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A pre-authentication remote code execution flaw affecting the SP Page Builder extension for Joomla has been disclosed and tracked as CVE-2026-48908. The issue allows arbitrary code execution without prior authentication, creating a high-risk path for attackers to compromise vulnerable Joomla sites that use the extension.
The vulnerability was documented in the official CVE record and highlighted by bjCSIRT, which warned that the flaw impacts the SP Page Builder component before login. The combination of unauthenticated access and code execution raises the likelihood of full website takeover, malicious payload deployment, and follow-on intrusion activity on exposed Joomla environments.
See affected versions and whether adversaries are exploiting it.
2 events from the most recent confirmed update back to the earliest known activity.
bjCSIRT published a security notice about a pre-authentication remote code execution vulnerability affecting the SP Page Builder extension for Joomla.
A CVE record for CVE-2026-48908 was published, documenting a pre-authentication remote code execution vulnerability affecting the SP Page Builder extension for Joomla.
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CISA has added two Joomla extension vulnerabilities to its Known Exploited Vulnerabilities catalog after confirming active exploitation against **SP Page Builder** and **Page Builder CK**. The flaws, tracked as `CVE-2026-48908` and `CVE-2026-56290`, are unauthenticated arbitrary file upload bugs that allow attackers to place malicious files on exposed Joomla sites and achieve remote code execution. Security reporting says the vulnerabilities have been used to upload web shells, deploy PHP file-manager backdoors, and create hidden administrator accounts for persistence on compromised systems. Vendor fixes are available, including **SP Page Builder 6.6.2** for the zero-day issue, and defenders are being urged to patch immediately or temporarily disable the affected extensions and restrict public access to vulnerable upload endpoints until remediation is complete.
Jul 8, 2026
FortiGuard Labs reported ongoing in-the-wild exploitation of **CVE-2026-48908**, a critical `CVSS 10.0` unauthenticated remote code execution flaw in the JoomShaper **SP Page Builder** extension for Joomla. The bug stems from an unrestricted file upload in the `asset.uploadCustomIcon` functionality that lets attackers upload and execute arbitrary PHP files, enabling full server compromise. Public proof-of-concept exploit code is available, and the vulnerability was added to CISA’s Known Exploited Vulnerabilities catalog after active abuse was confirmed. FortiGuard said exploitation has remained elevated, with **1,210 blocked attempts in 24 hours** and **15,626 over 7 days**, indicating sustained automated scanning of Internet-facing Joomla servers. The highest attack volumes were observed against organizations in **Poland, Turkey, Australia, and the United States**, with **Telecommunications/Carrier** and **Technology** among the most targeted sectors. Defenders were urged to upgrade to **SP Page Builder 6.6.2 or later**, restrict public access to Joomla administrative interfaces, block PHP execution in upload directories, and investigate for **web shells**, suspicious files, unauthorized administrator accounts, and other persistence because patching alone does not remove an existing compromise.
Jul 19, 2026
A critical vulnerability, **`CVE-2026-56290`**, affects the Joomla **Page Builder CK** extension before version **3.6.0** and allows **unauthenticated arbitrary file upload**. The flaw can let remote attackers upload executable files and achieve **full remote code execution**, and it has been assigned a **CVSS 4.0 score of 10.0**. Belgium’s Centre for Cybersecurity issued a warning urging organizations to patch immediately because exposed Joomla sites using the vulnerable extension could be compromised without authentication. Advisories recommend upgrading **Page Builder CK** to **3.6.0 or later**, restricting upload permissions, and validating allowed file types to reduce exposure. Related vulnerability reporting published at the same time also highlighted a separate critical web CMS plugin issue, **`CVE-2026-57331`**, in the WordPress **Paid Videochat Turnkey Site** plugin through **7.4.8**, where an **arbitrary file deletion** flaw rated **CVSS 9.9** was remediated in **7.4.9** or later, underscoring continued risk from insecure file-handling bugs in widely deployed content management extensions.
Jul 1, 2026