CVE-2026-104081

High

Description

KodExplorer before 4.55 contains a path traversal vulnerability in the unzip_pre_name() function within app/function/helper.function.php, where a single non-recursive str_replace() sanitization pass can be bypassed using crafted filenames like "....//", combined with PclZip's extract() call in KodArchive.class.php lacking the PCLZIP_OPT_EXTRACT_DIR_RESTRICTION option. Authenticated attackers can upload a malicious ZIP archive with traversal sequences to overwrite arbitrary files such as core JavaScript assets, enabling stored XSS that leads to admin account takeover and subsequent remote code execution via unrestricted PHP file upload.

SeverityHigh

CVSS8.1

Exploit probability—

ProductKodExplorer

PublishedOct 9, 2026

First seenOct 9, 2026

Weakness typeCWE-22Path traversal

How to fix

Update

kalcaddle KodExplorer4.55 or later

Patches

github.com/kalcaddle/KodExplorer/releases/tag/4.55

Affected products

Product	Affected versions	Fixed in
kalcaddle KodExplorer	v < 4.55	4.55

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