opensourcepos Open Source Point of Sale up to 3.4.2 Items.php getPicThumb pic_filename path traversal

Summaryinfo

A vulnerability, which was classified as critical, has been found in opensourcepos Open Source Point of Sale up to 3.4.2. Impacted is the function getPicThumb of the file app/Controllers/Items.php. This manipulation of the argument pic_filename causes path traversal. This vulnerability is registered as CVE-2026-8802. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch. The vendor was contacted early about this disclosure.

Detailsinfo

A vulnerability was found in opensourcepos Open Source Point of Sale up to 3.4.2. It has been declared as critical. Affected by this vulnerability is the function getPicThumb of the file app/Controllers/Items.php. The manipulation of the argument pic_filename 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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-8802. The exploitation appears to be easy. The attack can be launched remotely. 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.

The vendor was contacted early about this disclosure. By approaching the search of inurl:app/Controllers/Items.php it is possible to find vulnerable targets with Google Hacking.

Applying the patch def0c27a0e252668df8d942fc31e16d1edfd7323 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-30761). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• opensourcepos

Name

• Open Source Point of Sale

Version

• 3.4.0
• 3.4.1
• 3.4.2

License

• open-source

CPE 2.3info

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• 🔒
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CPE 2.2info

• 🔒
• 🔒
• 🔒

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Submitinfo

Accepted

• Submit #802559: opensourcepos Open Source Point of Sale 3.4.1 Path Traversal (by Kamran Saifullah)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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