Arbitrary file upload in Websitebaker Org E.v. Cms
CVE-2026-61524
WebsiteBaker CMS before 2.13.10 contains an unrestricted file upload vulnerability in the module installation feature that allows authenticated administrators to achieve remote code execution by uploading a crafted ZIP archive containing a PHP webshell alongside a valid info.php metadata file. Attackers can place the malicious archive through the module installation interface, causing the application to extract the webshell into a web-accessible modules/ subdirectory where it becomes immediately executable by any unauthenticated user via direct HTTP request.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (63.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Websitebaker Org E.v. Cms — versions 0
Weakness classification (CWE)
References
- medium.com/@benjaminasareagyapong2006/two-rce-vulnerabilities-i-found-on-my-bir… (technical-description, exploit)
- addon.websitebaker.org/en/browse-add-ons/ (product, patch)
- www.vulncheck.com/advisories/websitebaker-cms-file-upload-rce-via-module-instal… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-61524?
- CVE-2026-61524 is a high-severity vulnerability in Websitebaker Org E.v. Cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2026-08-03.
- How severe is CVE-2026-61524?
- High severity. CVSS v3 base score is 7.2 out of 10.