CVE-2026-104081 KodExplorer < 4.55 Path Traversal via unzip_pre_name() ZIP Extraction
Authenticated attackers can exploit path traversal in ZIP extraction to overwrite files, leading to stored XSS, admin takeover, and remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104081?
CVE-2026-104081 is a high-severity path traversal vulnerability in kalcaddle KodExplorer, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-104081?
How do I fix CVE-2026-104081?
No fix has been published for CVE-2026-104081 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-104081 being exploited?
There is no known exploitation of CVE-2026-104081 in the wild and no public exploit code.
Sources
Also known as GHSA-fq3j-vm9f-qx52.