Xerte Online Toolkits versions 3.15 and earlier contain a relative path traversal vulnerability in the elFinder connector endpoint at /editor/elfinder/php/connector.php where the name parameter in rename commands is not sanitized for path traversal sequences. Attackers can supply a name value containing directory traversal sequences to move files from project media directories to arbitrary locations on the filesystem, potentially overwriting application files, achieving stored cross-site scripting, or combining with other vulnerabilities to achieve unauthenticated remote code execution by moving PHP code files to the application root.
https://xerte.org.uk/xertetoolkits_3.15_ChangeLog.html
https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits
https://www.vulncheck.com/advisories/xerte-online-toolkits-path-traversal-via-connector-php
https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527
Published: 2026-04-22
Updated: 2026-04-24
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:C/A:N
Severity: High
Base Score: 7.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Severity: High
Base Score: 7.1
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00094