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CVE-2026-34415

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/22/2026

Last Modified4/22/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-184

References

https://github.com/thexerteproject/xerteonlinetoolkits/commit/02661be88cc369325ea01b508086bde7fbfec805(disclosure@vulncheck.com)

https://github.com/thexerteproject/xerteonlinetoolkits/commit/17e4f945fe6a3400fa88c01eda18c1075ee4a212(disclosure@vulncheck.com)

https://github.com/thexerteproject/xerteonlinetoolkits/commit/507d55c5e91bf9310b5b1c7fad8aebfef902ad23(disclosure@vulncheck.com)

https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/xerte-online-toolkits-file-upload-rce-via-elfinder-connector(disclosure@vulncheck.com)

https://xerte.org.uk/index.php/en/downloads-1/category/3-xerte-online-toolkits(disclosure@vulncheck.com)

https://xerte.org.uk/xertetoolkits_3.15_ChangeLog.html(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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