Skip to content

pygeoapi 0.23.x: Unauthenticated SSRF via OGC API - Processes Subscriber

High
tomkralidis published GHSA-jgvc-94c8-3chc Apr 22, 2026

Package

pip pygeoapi (pip)

Affected versions

0.23.x

Patched versions

0.23.3

Description

Impact

OGC API - Process execution requests can use the subscriber object to requests to internal HTTP services.

Patches

The issue has been patched in master branch and made available as part of the 0.23.3 release. The patch disables any HTTP requests made to internal resources by default (unless explicitly defined in configuration by a new allow_internal_requests directive.

The commit/fix can be found in 3a63f5b.

Workarounds

Users can update existing applications by disabling process based resources in their pygeoapi config, until 0.23.3 can be installed and deployed.

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVE ID

CVE-2026-42352

Weaknesses

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Learn more on MITRE.

Credits