CVE-2026-34413

HIGH 8.6

Xerte Online Toolkits Missing Authentication via connector.php

CVSS Score

8.6

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-497
Vendor	thexerteproject
Product	xerteonlinetoolkits
Published	Apr 22, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

Low

Affected Versions

thexerteproject / xerteonlinetoolkits

3.15.0 3.14.0 3.13.0 0 < 02661be88cc369325ea01b508086bde7fbfec805 0 < 17e4f945fe6a3400fa88c01eda18c1075ee4a212 0 < 507d55c5e91bf9310b5b1c7fad8aebfef902ad23

References

NVD ↗ CVE.org ↗ EPSS Data ↗

xerte.org.uk: https://xerte.org.uk/xertetoolkits_3.15_ChangeLog.html xerte.org.uk: https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits github.com: https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527 github.com: https://github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805 github.com: https://github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212 github.com: https://github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23 vulncheck.com: https://www.vulncheck.com/advisories/xerte-online-toolkits-missing-authentication-via-connector-php

Credits

bootstrapbool