HPE Fabric Composer up to 7.3.3 API Endpoint path traversal

Summaryinfo

A vulnerability marked as critical has been reported in HPE Fabric Composer up to 7.3.3. This affects an unknown part of the component API Endpoint. Performing a manipulation results in path traversal. This vulnerability is known as CVE-2026-73737. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in HPE Fabric Composer up to 7.3.3. It has been classified as critical. This affects an unknown code of the component API Endpoint. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An unauthenticated path traversal vulnerability exists in the API endpoint of HPE Networking Fabric Composer. Successful exploitation could allow an unauthenticated adjacent attacker to manipulate user generated files, potentially leading to unauthorized changes in critical system configurations, if certain preconditions outside of the attacker's control are met.

The advisory is shared at support.hpe.com. This vulnerability is uniquely identified as CVE-2026-73737 since 08/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/01/2026). MITRE ATT&CK project uses the attack technique T1006 for this issue.

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

Vendor

• HPE

Name

• Fabric Composer

Version

• 7.3.0
• 7.3.1
• 7.3.2
• 7.3.3

License

• commercial

Website

• Vendor: https://www.hpe.com/

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

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