Description
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.
References8
- github.com/bootstrapbool/xerteonlinetoolkits-rce
- github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88…
- github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945f…
- github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e…
- github.com/thexerteproject/xerteonlinetoolkits/issues/1527
- www.vulncheck.com/advisories/xerte-online-toolkits-missing-auth…
- xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-t…
- xerte.org.uk/xertetoolkits_3.15_ChangeLog.html
Metrics
- CVSS 3.1
-
8.6
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L - CVSS 4.0
-
8.8
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 3% percentile: 88 · as of 13 November 2026
- CWE
- CWE-497
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.