OpenCart 4.1.0.3 Extension Installer Page installer.php path traversal

Summaryinfo

A vulnerability has been found in OpenCart 4.1.0.3 and classified as critical. This vulnerability affects unknown code of the file installer.php of the component Extension Installer Page. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2026-5331. Remote exploitation of the attack is possible. Furthermore, an exploit is available. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as critical, has been found in OpenCart 4.1.0.3. This issue affects an unknown part of the file installer.php of the component Extension Installer Page. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The advisory is shared at drive.google.com. The identification of this vulnerability is CVE-2026-5331. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation requires an enhanced level of successful authentication. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1006 for this issue.

The exploit is available at drive.google.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. By approaching the search of inurl:installer.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• E-Commerce Management Software

Name

• OpenCart

Version

• 4.1.0.3

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #780814: OpenCart 4.1.0.3 Path Traversal (by hai271120)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion