{"id":"CVE-2026-45572","aliases":["GHSA-533c-2vh9-4r86"],"url":"https://o3.security/vulnerability/CVE-2026-45572","summary":"Decidim: HTML content blocks allow stored script execution","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, an administrator with landing-page editing privileges can store arbitrary HTML and JavaScript in an HTML content block, which Decidim::ContentBlocks::HtmlCell#html_content renders without sanitization, causing the script to execute in visitors' browsers. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.","published":"2026-08-06T20:10:54.774Z","modified":"2026-08-08T03:48:17.826563611Z","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/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/16451","label":"decidim/decidim#16451"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45572.json"},{"type":"ADVISORY","url":"https://github.com/decidim/decidim/security/advisories/GHSA-533c-2vh9-4r86"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45572"},{"type":"FIX","url":"https://github.com/decidim/decidim/pull/16451"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:48:17.826563611Z"}}