CVE-2026-41132: Ckan CKAN Has No Certificate Validation Vulnerability

MODERATE
Advisory Identifier: GHSA-mpfm-fpgx-647q
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CWE-295
Published
Advisory Summary

CVE-2026-41132 is a MODERATE ckan has no certificate validation vulnerability (CWE-295: Improper Certificate Validation) affecting Ckan libraries in the PyPI ecosystem. The issue involves ckan has no certificate validation on stmp connection. Remediation is available by upgrading affected packages to version 2.11.5, 2.10.10.

CVE-2026-41132 at a Glance

CVE Identifier CVE-2026-41132
GHSA Identifier GHSA-mpfm-fpgx-647q
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-295: Improper Certificate Validation
Affected Product Ckan
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2026-41132

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

ckan fixed: 2.11.5 
pip install ckan>=2.11.5
ckan fixed: 2.10.10 
pip install ckan>=2.10.10
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 ckan

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-41132, inspect your installed packages using pip:

pip show ckan

Analyze the terminal output to locate any version of Ckan in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.11.5), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Ckan, 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 Configured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks. ### Patches The vulnerability has been patched in CKAN 2.10.10 and CKAN 2.11.5

CVE-2026-41132 Affected Ckan Versions

2 component(s)
Fixed Versions:
2.11.52.10.10
Product / Package Ecosystem Affected Versions Fixed Version
ckan
pypi/ckan
PyPI
≥ 2.11.0
< 2.11.5
2.11.5
ckan
pypi/ckan
PyPI
< 2.10.10
2.10.10

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ckan/ckan/security/advisories/GHSA-mpfm-fpgx-647q
NVD — CVE-2026-41132 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41132
Ckan Security Information SECURITY
https://docs.ckan.org/en/2.10/changelog.html#v-2-10-10-2026-04-29
Ckan Security Information SECURITY
https://docs.ckan.org/en/2.11/changelog.html#v-2-11-5-2026-04-29
Ckan Source Repository REPOSITORY
https://github.com/ckan/ckan

Frequently Asked Questions

What is CVE-2026-41132?
CVE-2026-41132 is a security vulnerability in Ckan involving CKAN has no certificate validation on STMP connection under CWE-295: Improper Certificate Validation.
Which Ckan versions are affected?
Affected versions include releases prior to 2.11.5, 2.10.10 across affected packages: ckan.
What version fixes CVE-2026-41132?
Upgrading to 2.11.5, 2.10.10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ckan affected?
Yes, ckan is affected in releases prior to 2.11.5, 2.10.10. Upgrade your dependency to 2.11.5, 2.10.10 or later.
What CWE is associated with CVE-2026-41132?
CVE-2026-41132 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).
How can I check PyPI dependencies for CVE-2026-41132?
Run the dependency tree command: 'pip show ckan'. 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-mpfm-fpgx-647q",
  "modified" : "2026-05-14T20:39:37Z",
  "published" : "2026-04-29T20:33:20Z",
  "aliases" : [ "CVE-2026-41132" ],
  "summary" : "CKAN has no certificate validation on STMP connection",
  "details" : "### Impact\nConfigured SMTP server may be spoofed with any certificate (e.g. self-signed), leaving credentials and all emails sent open to MITM attacks.\n\n### Patches\nThe vulnerability has been patched in CKAN 2.10.10 and CKAN 2.11.5",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "ckan"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.11.0"
      }, {
        "fixed" : "2.11.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.11.4"
    }
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "ckan"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.10.10"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ckan/ckan/security/advisories/GHSA-mpfm-fpgx-647q"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41132"
  }, {
    "type" : "WEB",
    "url" : "https://docs.ckan.org/en/2.10/changelog.html#v-2-10-10-2026-04-29"
  }, {
    "type" : "WEB",
    "url" : "https://docs.ckan.org/en/2.11/changelog.html#v-2-11-5-2026-04-29"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ckan/ckan"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-295" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-29T20:33:20Z",
    "nvd_published_at" : "2026-05-13T19:17:21Z"
  }
}