Quick answers
- Is CVE-2026-61639 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-61639 being exploited in the wild.
- How severe is CVE-2026-61639?
- Informational severity, with a CVSS score of 8.8, published 31 August 2026.
- Which products and versions are affected?
- Wallos Wallos before 4.9.6.
- Is there a fix for CVE-2026-61639?
- A patch was published on 2026-06-22: Version 4.9.6 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-61639 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-61639?
- Check whether anything you run is named in the advisory. 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
This is a ZIP path traversal (ZIP slip) vulnerability in the POST /endpoints/db/restore.php endpoint. The vulnerable code calls ZipArchive::extractTo() without validating entry names for directory traversal sequences (../ patterns). An authenticated admin attacker can craft a malicious ZIP file with entries like "logos/../../endpoints/shell.php" that, when extracted, bypass the intended directory structure and write arbitrary files to the web root. The extension filter intended to prevent this only applies to the post-extraction logo copy step, not the initial extraction itself. The vulnerability has been patched in version 4.9.6 with proper path validation.
Affected products
- Wallos Wallos before 4.9.6
Timeline
- 2026-08-31: disclosed
- 2026-06-22: patched: Version 4.9.6 released