Arbitrary File Upload in SP Page Builder for Joomla
CVE-2026-48908
Key Information:
- Vendor
Joomshaper.net
- Vendor
- CVE Published:
- 20 June 2026
Badges
What is CVE-2026-48908?
CVE-2026-48908 is a critical vulnerability found in SP Page Builder, a widely-used extension for Joomla that facilitates the development of web pages with a user-friendly interface. This vulnerability allows unauthenticated users to upload arbitrary files to the server, which can lead to the execution of PHP code. Such exploitation could allow attackers to manipulate the web server, potentially leading to unauthorized access to sensitive information, server compromise, or further malware deployment. The ability to execute arbitrary code sets a significant threat level, as it can essentially give attackers control over the affected system.
Potential impact of CVE-2026-48908
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Remote Code Execution (RCE): This vulnerability enables attackers to upload and execute malicious PHP scripts on the server, leading to complete control over the affected system, which can be leveraged for a variety of harmful activities, such as data theft and system manipulation.
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Data Breaches: With the unauthorized execution of code, attackers can gain access to sensitive data hosted on the server, potentially leading to large-scale data breaches that can compromise customer information and disrupt business operations.
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Increased Risk of Ransomware Attacks: The exploitation of this vulnerability can serve as a stepping stone for further cyberattacks, including the deployment of ransomware. Once the attacker has code execution capabilities, they can install ransomware, encrypting files and demanding a ransom for their release, causing significant financial and operational impacts on the organization.
CISA has reported CVE-2026-48908
CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-48908 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace
The CISA's recommendation is: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Affected Version(s)
SP Page Builder extension for Joomla 1.0.0-6.6.1
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V4
Timeline
- 🦅
CISA Reported
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved