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CVE-2026-34415

Xerte Online Toolkits File Upload RCE via elfinder Connector

Published: Apr 22, 2026Updated: Apr 22, 2026 Sources: CVE List NVD
NVD MITRE
9.8CVSS
CRITICAL

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-184

Affected Products

xerteonlinetoolkits
thexerteproject

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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
xerte.org.uk
https://github.com/thexerteproject/xerteonlinetoolkits/issues/1527
github.com
and 4 more references View all →

Timeline

Published
Apr 22, 2026
Last Updated
Apr 22, 2026

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