CVE-2026-34415

CRITICAL

Xerte Online Toolkits File Upload RCE via elfinder Connector

Title source: cna
STIX 2.1

Description

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.

References (8)

Core 8
Core References
Product, Permissions Required product permissions-required
https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits

Scores

CVSS v3 9.8
EPSS 0.0070
EPSS Percentile 48.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-184
Status published
Products (7)
thexerteproject/xerteonlinetoolkits < 02661be88cc369325ea01b508086bde7fbfec805
thexerteproject/xerteonlinetoolkits < 17e4f945fe6a3400fa88c01eda18c1075ee4a212
thexerteproject/xerteonlinetoolkits < 3.15.0
thexerteproject/xerteonlinetoolkits < 507d55c5e91bf9310b5b1c7fad8aebfef902ad23
thexerteproject/xerteonlinetoolkits 3.13.0
thexerteproject/xerteonlinetoolkits 3.14.0
thexerteproject/xerteonlinetoolkits 3.15.0
Published Apr 22, 2026
Tracked Since Apr 23, 2026