CVE-2026-34607: Emlog: Path Traversal in emUnZip() allows arbitrary file write leading to RCE
Emlog is an open source website building system. In versions 2.6.2 and prior, a path traversal vulnerability exists in the emUnZip() function (include/lib/common.php:793). When extracting ZIP archives (plugin/template uploads, backup imports), the function calls $zip->extractTo($path) without sanitizing ZIP entry names. An authenticated admin can upload a crafted ZIP containing entries with ../ sequences to write arbitrary files to the server filesystem, including PHP webshells, achieving Remote Code Execution (RCE). At time of publication, there are no publicly available patches.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34607?
The severity of CVE-2026-34607 is critical due to the potential for remote code execution.
How do I fix CVE-2026-34607?
To fix CVE-2026-34607, upgrade to Emlog version 2.6.3 or later.
What type of vulnerability is CVE-2026-34607?
CVE-2026-34607 is a path traversal vulnerability that allows arbitrary file writes.
What are the affected versions for CVE-2026-34607?
Affected versions for CVE-2026-34607 are Emlog versions up to and including 2.6.2.
Can CVE-2026-34607 be exploited remotely?
Yes, CVE-2026-34607 can be exploited remotely to achieve remote code execution.