{"id":"PYSEC-2026-1252","summary":"Potential access to sensitive URLs via CKAN extensions (SSRF)","details":"### Impact\n\nThere are a number of CKAN plugins, including [XLoader](https://github.com/ckan/ckanext-xloader), [DataPusher](https://github.com/ckan/datapusher), [Resource proxy](https://docs.ckan.org/en/latest/maintaining/data-viewer.html#resource-proxy) and [ckanext-archiver](https://github.com/ckan/ckanext-archiver/), that work by downloading the contents of local or remote files in order to perform some actions with their contents (e.g. pushing to the DataStore, streaming contents or saving a local copy). All of them use the resource URL, and there are currently no checks to limit what URLs can be requested. This means that a malicious (or unaware) user can create a resource with a URL pointing to a place where they should not have access in order for one of the previous tools to retrieve it (known as a [Server Side Request Forgery](https://owasp.org/www-community/attacks/Server_Side_Request_Forgery)).\n\n### Patches and Workarounds\n\nUsers wanting to protect against these kinds of attacks can use one or a combination of the following approaches:\n\n* Use a separate HTTP proxy like [Squid](https://www.squid-cache.org/) that can be used to allow / disallow IPs, domains etc as needed, and make CKAN extensions aware of this setting via the [`ckan.download_proxy`](https://docs.ckan.org/en/latest/maintaining/configuration.html#ckan-download-proxy) config option. \n* Implement custom firewall rules to prevent access to restricted resources.\n* Use custom validators on the resource `url` field to block/allow certain domains or IPs.\n\nAll latest versions of the plugins linked above support the `ckan.download_proxy` settings. Support for this setting in the Resource Proxy plugin was included in CKAN 2.10.5 and 2.11.0\n\n### References\n\n* [Blog post](https://feeding.cloud.geek.nz/posts/restricting-outgoing-webapp-requests-using-squid-proxy/) provides more details on how to configure a Squid proxy to prevent these issues\n","aliases":["CVE-2024-43371","GHSA-g9ph-j5vj-f8wm"],"modified":"2026-07-07T17:47:25.977647652Z","published":"2026-07-07T14:34:39.245046Z","references":[{"type":"WEB","url":"https://github.com/ckan/ckan/security/advisories/GHSA-g9ph-j5vj-f8wm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-43371"},{"type":"WEB","url":"https://github.com/ckan/ckan/commit/382beaec98cb331f2a030459ef043c50eaf5ad53"},{"type":"WEB","url":"https://github.com/ckan/ckan/commit/8601183cc2fc87277ea5b33ff75c3a5610812ab5"},{"type":"PACKAGE","url":"https://github.com/ckan/ckan"},{"type":"PACKAGE","url":"https://pypi.org/project/ckan"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-g9ph-j5vj-f8wm"}],"affected":[{"package":{"name":"ckan","ecosystem":"PyPI","purl":"pkg:pypi/ckan"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.5"}]}],"versions":["0.11","0.3","0.4","0.5","0.6","0.7","0.8","1.0","1.1","1.2","1.3","1.3.2","1.3.3","1.4","1.4.1","1.4.2","1.4.3","1.4.3.1","1.5","1.5.1","1.6","1.7","1.7.1","1.8","2.0","2.0.1","2.0.7","2.0.8","2.1","2.1.1","2.1.5","2.1.6","2.10.0","2.10.1","2.10.3","2.10.4","2.2","2.2.1","2.2.3","2.2.4","2.3","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.4.5","2.4.8","2.4.9","2.5.0","2.5.1","2.5.2","2.5.3","2.5.4","2.5.6","2.5.7","2.5.8","2.5.9","2.6.0","2.6.1","2.6.3","2.6.4","2.6.5","2.6.6","2.6.7","2.6.8","2.6.9","2.7.0","2.7.1","2.7.10","2.7.11","2.7.12","2.7.2","2.7.3","2.7.4","2.7.5","2.7.6","2.7.7","2.7.8","2.7.9","2.8.0","2.8.1","2.8.10","2.8.11","2.8.12","2.8.2","2.8.3","2.8.4","2.8.5","2.8.6","2.8.7","2.8.8","2.8.9","2.9.0","2.9.1","2.9.10","2.9.11","2.9.2","2.9.3","2.9.4","2.9.5","2.9.6","2.9.7","2.9.8","2.9.9"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/ckan/PYSEC-2026-1252.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}