Path Concatenation Vulnerability in pygeoapi by Geopython
CVE-2026-42351

7.5HIGH

Key Information:

Vendor

Geopython

Status
Pygeoapi
Vendor
CVE Published:
8 May 2026

What is CVE-2026-42351?

The pygeoapi implementation has a vulnerability in the STAC FileSystemProvider plugin, allowing unprotected access to directory resources. This occurs due to improper handling of raw string path concatenation when deployed without a proper URL normalizing proxy. If exploited, it can result in unauthorized exposure of sensitive directories within STAC collections. Users are encouraged to upgrade to version 0.23.3 or later to mitigate this risk.

Affected Version(s)

pygeoapi >= 0.23.0, < 0.23.3

References

https://github.com/geopython/pygeoapi/security/advisories...
x_refsource_CONFIRM
https://github.com/geopython/pygeoapi/commit/bf25b8695edb...
x_refsource_MISC
https://github.com/geopython/pygeoapi/releases/tag/0.23.3
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.