How severe is CVE-2026-41255?

CVE-2026-41255 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-41255 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41255?

CVE-2026-41255 affects Okfn Ckan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41255?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-41255 have an EU (EUVD) identifier?

Yes. CVE-2026-41255 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30117.

When was CVE-2026-41255 published?

CVE-2026-41255 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-41255

CVE-2026-41255 is a medium-severity vulnerability in Okfn Ckan with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30117
Weakness: CWE-352
Affected product: Okfn Ckan
Published: 2026-05-13
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-41255?: 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.
How severe is CVE-2026-41255?: CVE-2026-41255 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-41255 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41255?: CVE-2026-41255 affects Okfn Ckan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41255?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-41255 have an EU (EUVD) identifier?: Yes. CVE-2026-41255 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30117.
When was CVE-2026-41255 published?: CVE-2026-41255 was published on 2026-05-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:okfn:ckan:*:*:*:*:*:*:*:*

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