{"id":"CVE-2021-25976","aliases":["EUVD-2021-2374","GHSA-ppq7-88c7-q879"],"status":"published","title":"Piranha CMS - Site-wide Cross-Site Request Forgery (CSRF)","description":"In PiranhaCMS, versions 4.0.0-alpha1 to 9.2.0 are vulnerable to cross-site request forgery (CSRF) when performing various actions supported by the management system, such as deleting a user, deleting a role, editing a post, deleting a media folder etc., when an ID is known.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00456,"percentile":0.39865,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-352"],"published":"2021-11-16T09:05:12Z","modified":"2026-10-20T10:54:34Z","fixes":[{"ecosystem":"NuGet","package":"Piranha","fixed_in":["10.0-alpha1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"Piranha","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha1"},{"last_affected":"9.2.0"},{"fixed":"10.0-alpha1"}]}]},{"source":"osv","ecosystem":"NuGet","package":"Piranha","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha1"},{"fixed":"10.0-alpha1"}]}],"versions":["4.0.0","4.0.0-alpha1","4.0.0-alpha3","4.0.0-alpha4","4.0.0-alpha5","4.0.0-alpha6","4.0.0-alpha7","4.0.0-alpha7-1","4.0.0-alpha8","4.0.0-alpha9","4.0.0-beta1","4.0.0-rc1","4.1.0","4.1.0-alpha1","4.1.0-beta1","4.1.0-beta2","4.1.1","4.2.0","4.2.0-alpha1","4.2.0-alpha2","4.2.0-beta1","4.2.1","4.3.0","4.3.0-beta1","5.0.0","5.0.0-alpha1","5.0.0-beta1","5.1.0","5.1.0-alpha1","5.1.0-alpha2","5.1.0-beta1","5.1.1","5.1.2","5.2.0","5.2.0-beta1","5.2.0-beta2","5.2.1","5.3.0","5.3.0-beta1","5.3.1","5.4.0","6.0.0","6.0.1","6.1.0","7.0.0","7.0.0-alpha1","7.0.0-alpha2","7.0.0-alpha3","7.0.0-beta1","7.0.0-rc1","7.0.1","7.0.2","7.0.3","7.1.0","8.0.0","8.0.1","8.0.2","8.1.0","8.2.0","8.3.0","8.4.0","8.4.1","8.4.2","9.0.0","9.0.0-beta1","9.0.0-rc1","9.0.0-rc2","9.0.1","9.1.0","9.1.0-alpha1","9.1.0-alpha2","9.1.0-beta1","9.1.1","9.2.0"]}],"products":[{"vendor":"dotnetfoundation","product":"piranha_cms"},{"vendor":"piranhacms","product":"piranha"}],"references":[{"url":"https://github.com/PiranhaCMS/piranha.core/commit/e42abacdd0dd880ce9cf6607efcc24646ac82eda","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25976","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25976","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-ppq7-88c7-q879"},{"url":"https://github.com/PiranhaCMS/piranha.core","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-25976","title":"Piranha CMS - 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