CVE-2026-34413
HighCVSS 8.6Exploitation Probability (EPSS)
High risk85th percentile - higher than 85% of all known CVEs
Summary
Xerte Online Toolkits versions 3.15 and earlier have a missing authentication vulnerability in the elFinder connector endpoint. An HTTP redirect to unauthenticated callers does not call exit() or die(), allowing PHP execution to continue and process the full request server-side.
Risk Assessment
Unauthenticated attackers can perform file operations on project media directories including creating, uploading, renaming, duplicating, overwriting, and deleting files. This can be chained with path traversal and extension blocklist vulnerabilities to achieve remote code execution and arbitrary file read.
Recommendation
Immediately update Xerte Online Toolkits to a version newer than 3.15. If an update is not possible, temporarily disable or secure the /editor/elfinder/php/connector.php endpoint from unauthenticated access.
Other vulnerabilities in Xerte Online Toolkits
See all- CVE-2026-34415Critical
Xerte Online Toolkits versions 3.15 and earlier have an incomplete input validation vulnerability in the elFinder connector endpoint that fails to block the .php4 extension due to an incorrect regex pattern. Unauthenticated attackers can exploit this flaw combined with authentication bypass and path traversal to upload malicious PHP code and execute arbitrary system commands on the server.
- CVE-2026-41459Medium
Xerte Online Toolkits versions 3.15 and earlier contain an information disclosure vulnerability that allows unauthenticated attackers to retrieve the full server-side filesystem path of the application root. Attackers can send a GET request to the /setup page to access the exposed root_path value rendered in the HTML response.
- CVE-2026-34414High
A relative path traversal vulnerability in Xerte Online Toolkits versions 3.15 and earlier allows attackers to move files from project media directories to arbitrary filesystem locations via an unsanitized 'name' parameter in the rename command of the elFinder connector. This can lead to overwriting application files, stored cross-site scripting, or when combined with other vulnerabilities, unauthenticated remote code execution by moving PHP files to the application root.
Original NVD description (English source)
Xerte Online Toolkits versions 3.15 and earlier contain a missing authentication vulnerability in the elFinder connector endpoint at /editor/elfinder/php/connector.php where an HTTP redirect to unauthenticated callers does not call exit() or die(), allowing PHP execution to continue and process the full request server-side. Unauthenticated attackers can perform file operations on project media directories including creating directories, uploading files, renaming files, duplicating files, overwriting files, and deleting files, which can be chained with path traversal and extension blocklist vulnerabilities to achieve remote code execution and arbitrary file read.