Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE-2026-42351
Summary
A raw string path concatenation vulnerability in pygeoapi's STAC FileSystemProvider plugin can allow for requests to STAC collection based collections to expose directories without authentication. The issue manifests when pygeoapi is deployed without a proxy or web front end that would normalize URLs with `..` values, along with a resource of type `stac-collection` defined in configuration. This affects versions starting from0.23.0 prior to 0.23.3.
- LOW
- NETWORK
- NONE
- UNCHANGED
- NONE
- NONE
- HIGH
- NONE
CWE-22 - Path Traversal
Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.
References
Advisory Timeline
- Published
