CVE-2026-41255: CKAN is an open-source DMS (data management system) for powering data hubs and data portals

Routine

MEDIUM 6.1UPGRADE

CVE-2026-41255 is a medium-severity flaw (CVSS 6.1) affecting ckan. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 de

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-352
Published	2026-05-13
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: okfn

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-13 19:17 UTCPublished CVE record published
2026-06-17 10:46 UTCUpdated Record last modified

okfn ckan UPGRADE

Affected: < 2.10.10 · >= 2.11.0 and < 2.11.5

Fixed in: 2.10.10, 2.11.5

Safe to downgrade to: a release before 2.11.0

1. Check installed version

apt-cache policy ckan || rpm -q ckan || ckan --version

2. UPGRADE to 2.10.10 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ckan

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ckan

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.11.0 (Debian / Ubuntu)

apt-cache madison ckan sudo apt install ckan=<VERSION_BEFORE_2.11.0> sudo apt-mark hold ckan

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ckan sudo dnf downgrade ckan-<VERSION_BEFORE_2.11.0> sudo dnf versionlock add ckan

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41255?

ckan: upgrade to 2.10.10, 2.11.5. Exact commands for each OS are on this page.

Is CVE-2026-41255 being exploited?

CVE-2026-41255 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41255 affect?

CVE-2026-41255 affects ckan. Severity is medium (CVSS 6.1). 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 m

How urgent is CVE-2026-41255?

Priority 22/100. No elevated risk signals yet.

Software pages

Flask vulnerabilities

Related CVEs

CVE-2026-42032 CRITICAL 9.1 UPGRADE CKAN is an open-source DMS (data management system) for powering data hubs and data portals
CVE-2026-42031 CRITICAL 9.8 UPGRADE CKAN is an open-source DMS (data management system) for powering data hubs and data portals
CVE-2026-41132 HIGH 7.4 UPGRADE CKAN is an open-source DMS (data management system) for powering data hubs and data portals

References

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