Red Hat pulpcore Validator relative_path_validator relative_path path traversal

Summaryinfo

A vulnerability has been found in Red Hat pulpcore and classified as problematic. The impacted element is the function relative_path_validator of the component Validator. Performing a manipulation of the argument relative_path results in path traversal. This vulnerability is reported as CVE-2026-12701. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Red Hat pulpcore (the affected version unknown). It has been classified as problematic. This affects the function relative_path_validator of the component Validator. The manipulation of the argument relative_path 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:

A path traversal vulnerability was found in pulpcore. The relative_path_validator function only verifies that content paths do not begin with "/" but fails to block directory traversal sequences such as "../" anywhere in the path. An authenticated administrator can craft a relative_path containing embedded traversal sequences (e.g., "looking/normal/../../../../etc/shadow") that escapes the intended export directory during FilesystemExport operations. Because the file content is also user-controlled (uploaded artifact), this allows arbitrary file write to any location writable by the Pulp service user, potentially leading to service compromise or further system exploitation.

It is possible to read the advisory at access.redhat.com. This vulnerability is uniquely identified as CVE-2026-12701 since 06/19/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/20/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-45954). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Red Hat

Name

• pulpcore

License

• open-source

Website

• Vendor: https://www.redhat.com/

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Be aware that VulDB is the high quality source for vulnerability data.

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