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TI-2026-29863 Aliases CVE-2026-41255GHSA-mcvf-jxcw-vj73

CKAN: CSRF exemption primed by anonymous requests

Priority MEDIUM 60CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Tampering
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-352.

Summary

CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.10 and 2.11.5, Access to the views via tokens or unauthenticated requests marked the endpoint as not requiring CSRF protection. The marking was a member variable in flask-wtf.csrf.CSRFProtect(), which was stored as a module level variable in the flask_app middleware. This API was never intended for request level changes, it is primarily a decorator for static configuration. An unauthenticated request could hit a protected endpoint, exempting it from CSRF protection for the life of the particular server process. (e.g. one worker of uwsgi). This vulnerability is fixed in 2.10.10 and 2.11.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00124 2nd percentileScored 2026-11-07
Fix Fixed ckan (ckan): 2.11.5, 2.10.10ckan (PyPI): 2.10.10, 2.11.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ckanckan2.11.0 to before 2.11.5; before 2.10.102.11.5, 2.10.10Patch availableCNA
—ckan (PyPI)2.10.0 to before 2.10.102.10.10Patch availableGHSA-mcvf-jxcw-vj73
—ckan (PyPI)2.11.0 to before 2.11.52.11.5Patch availableGHSA-mcvf-jxcw-vj73
  • ckan Vendorckan Affected 2.11.0 to before 2.11.5; before 2.10.10 Fixed in 2.11.5, 2.10.10 Patch available CNA
  • ckan (PyPI) Vendor— Affected 2.10.0 to before 2.10.10 Fixed in 2.10.10 Patch available GHSA-mcvf-jxcw-vj73
  • ckan (PyPI) Vendor— Affected 2.11.0 to before 2.11.5 Fixed in 2.11.5 Patch available GHSA-mcvf-jxcw-vj73

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:okfn:ckan:*:*:*:*:*:*:*:*before 2.10.10; 2.11.0 to before 2.11.5Vulnerableckan
  • cpe:2.3:a:okfn:ckan:*:*:*:*:*:*:*:* Versions before 2.10.10; 2.11.0 to before 2.11.5 Vulnerable ·ckan

Remediation

  • Fix · CNA ckan (ckan) Fixed in 2.11.5, 2.10.10
  • Fix · GHSA-mcvf-jxcw-vj73 ckan (PyPI) Fixed in 2.10.10 Advisory →
  • Fix · GHSA-mcvf-jxcw-vj73 ckan (PyPI) Fixed in 2.11.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41255
  2. 2026-10-03 Alias added: GHSA-mcvf-jxcw-vj73

References

Advisory 3

Other 3

  • TI-2021-07973 CKAN - Stored Cross-Site Scripting (XSS) via SVG File Upload CVSS 3.1MEDIUM 5.4
  • TI-2023-15615 CKAN remote code execution and private information access via crafted resource ids CVSS 3.1CRITICAL 9.8
  • TI-2026-30410 CKAN: Unauthenticated SQL Injection and Authorization Bypass in `datastore_search_sql` CVSS 4.0HIGH 8.3
  • TI-2023-08919 CKAN is vulnerable to session secret shared across instances using Docker images CVSS 3.1HIGH 8.6
  • TI-2023-15972 Excessive permissions for ckan user CVSS 3.1HIGH 8.8
  • TI-2022-21443 CKAN through 2.9.6 account takeovers by unauthenticated users when an existing user id is… CVSS 3.1HIGH 8.8
See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences