CVE-2026-48908
JoomShaper SP Page Builder Unrestricted Upload of File with Dangerous Type Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 July 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A vulnerability in SP Page Builder for Joomla allows unauthenticated users to upload arbitrary files, ultimately resulting in the upload and execution of PHP code.
- CVSS 4.0
- 10.0 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 88.51% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Listed 7 July 2026 · due 10 July 2026
- Weakness
- CWE-434
- Affected
- ollyo/sp page builder
- Source
- security@joomla.org
EPSS moved from 88.5% on 25 September 2026 to 88.5% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
CISA notes
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. https://extensions.joomla.org/extension/sp-page-builder/ ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-48908
References
- https://www.joomshaper.com/page-builderProduct
- https://extensions.joomla.org/extension/sp-page-builder/Product
- https://mysites.guru/blog/sp-page-builder-zero-day-uploadcustomicon-rce/Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48908US Government Resource
- https://www.joomshaper.com/forum/question/45152Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.