Vulnerability · Published Apr 22, 2026 · Assigned by VulnCheck
CVE-2026-34413Xerte Online Toolkits Missing Authentication via connector.php
High 8.6
In plain English
A high-severity security flaw in xerteonlinetoolkits from thexerteproject. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.1% (higher than 88% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| thexerteproject | xerteonlinetoolkits | 0 – through 3.15.0 |
Weakness: CWE-497 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
References
- https://github.com/bootstrapbool/xerteonlinetoolkits-rce technical-description, exploit
- https://xerte.org.uk/xertetoolkits_3.15_ChangeLog.html release-notes
- https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits product, permissions-required
- https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527 issue-tracking
- https://github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805 patch
- https://github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212 patch
- https://github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23 patch
- https://www.vulncheck.com/advisories/xerte-online-toolkits-missing-authentication-via-connector-php third-party-advisory