CVE-2026-34607: Emlog path traversal in emUnZip function

CVE-2026-34607 · Severity: high · CVSS 7.2 · Published 2026-04-03

Emlog is an open-source website building and content management system. A security flaw in how the system handles uploaded ZIP files (such as plugins or themes) allows an administrator to save files to unauthorized locations on the server. By exploiting this, an attacker could upload a malicious script to take full control of the web server, potentially leading to data theft or a complete site shutdown.

Technologies: Emlog. Vendors: Emlog.

Quick answers

Is CVE-2026-34607 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-34607 being exploited in the wild.
How severe is CVE-2026-34607?
High severity, with a CVSS score of 7.2, published 3 April 2026.
Which products and versions are affected?
Emlog <= 2.6.2.
Is there a fix for CVE-2026-34607?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-34607 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-34607?
Check whether you run Emlog at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A path traversal vulnerability (CWE-22) exists in the emUnZip() function within include/lib/common.php. The root cause is the use of the $zip->extractTo($path) method without prior sanitization of the entry names within the ZIP archive. An authenticated attacker with administrative privileges can trigger this via plugin uploads, template uploads, or backup imports. By including '../' sequences in the filenames within a ZIP archive, the attacker can escape the intended directory and write arbitrary files, such as PHP webshells, to the web root or other sensitive directories. This leads to Remote Code Execution (RCE). As of the advisory date, no official patches are available.

Affected products

  • emlog emlog <= 2.6.2

Timeline

  • 2026-03-30: advisory: GitHub Security Advisory published by vendor
  • 2026-04-03: disclosed: CVE published to NVD

References

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