CVE-2026-42352: Pygeoapi Unauthenticated SSRF Vulnerability

HIGH
Advisory Identifier: GHSA-jgvc-94c8-3chc
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CVSS 8.6
CWE-918
Published
Advisory Summary

CVE-2026-42352 is a HIGH (CVSS 8.6) unauthenticated ssrf vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Pygeoapi libraries in the PyPI ecosystem. The issue involves unauthenticated ssrf via ogc api - processes subscriber. Remediation is available by upgrading affected packages to version 0.23.3.

CVE-2026-42352 at a Glance

CVE Identifier CVE-2026-42352
GHSA Identifier GHSA-jgvc-94c8-3chc
Severity HIGH
CVSS v3.1 Base Score 8.6
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Pygeoapi
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-42352

To remediate this vulnerability, upgrade all affected Pygeoapi dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

pygeoapi fixed: 0.23.3 
pip install pygeoapi>=0.23.3
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show pygeoapi

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-42352, inspect your installed packages using pip:

pip show pygeoapi

Analyze the terminal output to locate any version of Pygeoapi in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.23.3), your application is affected.

Note: The pip show pygeoapi command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where 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. In Pygeoapi, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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 [3a63f5b0cc6275e3ae0edb47726b13a43cdd90ef](https://github.com/geopython/pygeoapi/commit/3a63f5b0cc6275e3ae0edb47726b13a43cdd90ef). ### Workarounds Users can update existing applications by disabling process based resources in their pygeoapi config, until 0.23.3 can be installed and deployed.

CVE-2026-42352 Affected Pygeoapi Versions

1 component(s)
Fixed Versions:
0.23.3
Product / Package Ecosystem Affected Versions Fixed Version
pygeoapi
pypi/pygeoapi
PyPI
≥ 0.23.0
< 0.23.3
0.23.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/geopython/pygeoapi/security/advisories/GHSA-jgvc-94c8-3chc
NVD — CVE-2026-42352 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42352
Security Fix Commit FIX COMMIT
https://github.com/geopython/pygeoapi/commit/3a63f5b0cc6275e3ae0edb47726b13a43cdd90ef
Pygeoapi Source Repository REPOSITORY
https://github.com/geopython/pygeoapi
Pygeoapi Release RELEASE
https://github.com/geopython/pygeoapi/releases/tag/0.23.3

Frequently Asked Questions

What is CVE-2026-42352?
CVE-2026-42352 is a security vulnerability in Pygeoapi involving Unauthenticated SSRF via OGC API - Processes Subscriber under CWE-918: Server-Side Request Forgery (SSRF).
Which Pygeoapi versions are affected?
Affected versions include releases prior to 0.23.3 across affected packages: pygeoapi.
What version fixes CVE-2026-42352?
Upgrading to 0.23.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pygeoapi affected?
Yes, pygeoapi is affected in releases prior to 0.23.3. Upgrade your dependency to 0.23.3 or later.
What is the CVSS score of CVE-2026-42352?
CVE-2026-42352 has a CVSS v3.1 base score of 8.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
What CWE is associated with CVE-2026-42352?
CVE-2026-42352 is classified under CWE-918: 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.).
How can I check PyPI dependencies for CVE-2026-42352?
Run the dependency tree command: 'pip show pygeoapi'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jgvc-94c8-3chc",
  "modified" : "2026-05-13T13:38:17Z",
  "published" : "2026-04-29T22:19:53Z",
  "aliases" : [ "CVE-2026-42352" ],
  "summary" : "pygeoapi 0.23.x: Unauthenticated SSRF via OGC API - Processes Subscriber  ",
  "details" : "### Impact\nOGC API - Process execution requests can use the `subscriber` object to requests to internal HTTP services.\n\n### Patches\nThe 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.\n\nThe commit/fix can be found in [3a63f5b0cc6275e3ae0edb47726b13a43cdd90ef](https://github.com/geopython/pygeoapi/commit/3a63f5b0cc6275e3ae0edb47726b13a43cdd90ef).\n\n### Workarounds\nUsers can update existing applications by disabling process based resources in their pygeoapi config, until 0.23.3 can be installed and deployed.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "pygeoapi"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.23.0"
      }, {
        "fixed" : "0.23.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/geopython/pygeoapi/security/advisories/GHSA-jgvc-94c8-3chc"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-42352"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/geopython/pygeoapi/commit/3a63f5b0cc6275e3ae0edb47726b13a43cdd90ef"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/geopython/pygeoapi"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/geopython/pygeoapi/releases/tag/0.23.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-29T22:19:53Z",
    "nvd_published_at" : "2026-05-08T23:16:38Z"
  }
}