{"id":"CVE-2026-45573","title":"Decidim is a participatory democracy framework","summary":"Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, when VAPID delivery is enabled, the notification subscription flow stores a client-supplied push endpoint wi…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-918"],"vendor":"decidim-core","product":"decidim-core","affected":["decidim-core < 0.30.9","decidim-core >= 0.31.0.rc1, < 0.31.5","decidim-core >= 0.32.0.rc1, < 0.32.0"],"patched":["decidim-core 0.30.9","decidim-core 0.31.5","decidim-core 0.32.0"],"published":"2026-08-06","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:51:43.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45573","references":[{"url":"https://github.com/decidim/decidim/pull/16714","label":"security-advisories@github.com"},{"url":"https://github.com/decidim/decidim/security/advisories/GHSA-2g9c-vf8h-prxx","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-2g9c-vf8h-prxx"}],"tags":["nvd","ghsa","rubygems"],"epss":0.00309,"epssPercentile":0.23824,"aliases":["GHSA-2g9c-vf8h-prxx"],"ecosystem":"rubygems","ingestedAt":"2026-07-13T17:27:58.901Z","slug":"CVE-2026-45573","body":"## Overview\n\nDecidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, when VAPID delivery is enabled, the notification subscription flow stores a client-supplied push endpoint without validating that it belongs to an approved push service, and SendPushNotification later passes that endpoint to WebPush.payload_send, allowing an authenticated user to create stored, mostly blind server-side requests to arbitrary reachable HTTPS endpoints. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-45573)\n\nAffected packages:\n\n- `decidim-core < 0.30.9`\n- `decidim-core >= 0.31.0.rc1, < 0.31.5`\n- `decidim-core >= 0.32.0.rc1, < 0.32.0`\n\nPatched in:\n\n- `decidim-core 0.30.9`\n- `decidim-core 0.31.5`\n- `decidim-core 0.32.0`\n\nSource: https://github.com/advisories/GHSA-2g9c-vf8h-prxx","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}