Vulnerability · Published Oct 29, 2025 · Assigned by GitHub_M
CVE-2025-64100CKAN Vulnerable to Session Cookie Fixation
Medium 6.1
In plain English
A medium-severity session fixation in ckan from ckan. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
CKAN is an open-source DMS (data management system) for powering data hubs and data portals. Prior to 2.10.9 and 2.11.4, session ids could be fixed by an attacker if the site is configured with server-side session storage (CKAN uses cookie-based session storage by default). The attacker would need to either set a cookie on the victim's browser or steal the victim's currently valid session. Session identifiers are now regenerated after each login. This vulnerability has been fixed in CKAN 2.10.9 and 2.11.4
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | ckan | 2.10.9 | GHSA-2hvh-cw5c-8q8q |
| PyPI | ckan | 2.11.4 | GHSA-2hvh-cw5c-8q8q |
| PyPI | ckan | 2.10.9, 2.11.4 | PYSEC-2026-1246 |
Affected products (as reported)
Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
References
- https://github.com/ckan/ckan/security/advisories/GHSA-2hvh-cw5c-8q8q x_refsource_CONFIRM
- https://github.com/ckan/ckan/commit/c2fe437f88be850a6edf7a32470772428819fab5 x_refsource_MISC