ellite Wallos up to 4.9.5 Zip Extraction restore.php ZipArchive::extractTo path traversal

Summaryinfo

A vulnerability classified as problematic has been found in ellite Wallos up to 4.9.5. The impacted element is the function ZipArchive::extractTo of the file /endpoints/db/restore.php of the component Zip Extraction. This manipulation causes path traversal. The identification of this vulnerability is CVE-2026-61639. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in ellite Wallos up to 4.9.5. Affected by this vulnerability is the function ZipArchive::extractTo of the file /endpoints/db/restore.php of the component Zip Extraction. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.6, POST /endpoints/db/restore.php calls ZipArchive::extractTo() without validating entry names for ../ sequences. Admin uploads crafted zip with entry logos/../../endpoints/shell.php to write webshell to webroot. Extension filter only applies to post-extraction logo copy step. This issue has been patched in version 4.9.6.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-61639 since 07/10/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

By approaching the search of inurl:endpoints/db/restore.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 4.9.6 eliminates this vulnerability.

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Productinfo

Vendor

• ellite

Name

• Wallos

Version

• 4.9.0
• 4.9.1
• 4.9.2
• 4.9.3
• 4.9.4
• 4.9.5

Website

• Product: https://github.com/ellite/Wallos/

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