CVE-2026-34415

Xerte Online Toolkits versions 3.15 and earlier contain an incomplete input validation vulnerability in the elFinder connector endpoint that fails to block PHP-executable extensions .php4 due to an incorrect regex pattern. Unauthenticated attackers can exploit this flaw combined with authentication bypass and path traversal vulnerabilities to upload malicious PHP code, rename it with a .php4 extension, and execute arbitrary operating system commands on the server.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

24 Apr 2026, 20:16

Type	Values Removed	Values Added
References		() https://github.com/bootstrapbool/xerteonlinetoolkits-rce -

22 Apr 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-22 19:17

Updated : 2026-04-24 20:16

NVD link : CVE-2026-34415

Mitre link : CVE-2026-34415

CVE.ORG link : CVE-2026-34415

JSON object : View

Products Affected

No product.

CWE

CWE-184

Incomplete List of Disallowed Inputs

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