{"id":"CVE-2026-45573","aliases":["GHSA-2g9c-vf8h-prxx"],"url":"https://o3.security/vulnerability/CVE-2026-45573","summary":"Decidim: Push subscriptions can be abused for server-side requests","details":"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 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.","published":"2026-08-06T20:14:07.078Z","modified":"2026-08-08T03:30:37.971868806Z","cvss":{"score":6.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"RubyGems","name":"decidim-core","fixedVersion":"0.30.9"},{"ecosystem":"RubyGems","name":"decidim-core","fixedVersion":"0.31.5"},{"ecosystem":"RubyGems","name":"decidim-core","fixedVersion":"0.32.0"}],"fix":{"url":"https://github.com/decidim/decidim/pull/16714","label":"decidim/decidim#16714"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45573.json"},{"type":"ADVISORY","url":"https://github.com/decidim/decidim/security/advisories/GHSA-2g9c-vf8h-prxx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45573"},{"type":"FIX","url":"https://github.com/decidim/decidim/pull/16714"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:30:37.971868806Z"}}