CVE-2026-41255
CKAN: CSRF exemption primed by anonymous requests
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.
INFO
Published Date :
May 13, 2026, 7:17 p.m.
Last Modified :
May 15, 2026, 2:58 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update CKAN to version 2.10.10.
- Update CKAN to version 2.11.5.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-41255.
| URL | Resource |
|---|---|
| https://github.com/Shirshaw64p/security-advisories/tree/main/CVE-2026-41255 | Vendor Advisory |
| https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 | Vendor Advisory |
| https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-41255 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-41255
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-41255 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-41255 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 15, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:okfn:ckan:*:*:*:*:*:*:*:* versions up to (excluding) 2.10.10 *cpe:2.3:a:okfn:ckan:*:*:*:*:*:*:*:* versions from (including) 2.11.0 up to (excluding) 2.11.5 Added Reference Type CISA-ADP: https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 Types: Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 Types: Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/Shirshaw64p/security-advisories/tree/main/CVE-2026-41255 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 14, 2026
Action Type Old Value New Value Added Reference https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 -
New CVE Received by [email protected]
May. 13, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Added CWE CWE-352 Added Reference https://github.com/ckan/ckan/security/advisories/GHSA-mcvf-jxcw-vj73 Added Reference https://github.com/Shirshaw64p/security-advisories/tree/main/CVE-2026-41255