CVE-2026-41255 Details
Description
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.
A vulnerability in CKAN versions 2.10.x, 2.11.x prior to 2.11.5, allows for a persistent cross-site request forgery (CSRF) protection bypass. This issue arises because unauthenticated requests can exempt certain endpoints from CSRF protection, a change that persists for the duration of the server process. As a result, an authenticated user can be exploited to perform actions without the necessary CSRF token, potentially leading to privilege escalation.
Users can upgrade to CKAN versions 2.11.5 or 2.10.10 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 | CISA-ADP | Vendor Advisory |
| https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 | [email protected] | Vendor Advisory |
| https://github.com/Shirshaw64p/security-advisories/tree/main/CVE-2026-41255 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-352 | Cross-Site Request Forgery (CSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| okfn ckan | < 2.10.10 >= 2.11.0, < 2.11.5 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 15, 2026 | Initial Analysis | [email protected] |
| May 14, 2026 | CVE Modified | CISA-ADP |
| May 13, 2026 | New CVE Received | [email protected] |