CVE-2026-42351 HIGH

CVE-2026-42351: pygeoapi: Path Traversal in STAC FileSystemProvider

Vendor Geopython
Product pygeoapi
Weakness CWE-22 · Path traversal
Published May 8, 2026
Last update May 12, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

pygeoapi is a Python server implementation of the OGC API suite of standards. From version 0.23.0 to before version 0.23.3, 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 issue has been patched in version 0.23.3.

Key dates

02Disclosure timeline

May 8, 2026 CVE published
May 12, 2026 Record updated