{"id":"CVE-2023-34089","aliases":["EUVD-2023-1963","GHSA-5652-92r9-3fx9"],"status":"published","title":"Decidim Cross-site Scripting vulnerability in the processes filter","description":"Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing. The problem was patched in version 0.27.3 and 0.26.7.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00736,"percentile":0.54921,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2023-07-11T17:36:14Z","modified":"2026-10-28T02:30:49Z","fixes":[{"ecosystem":"RubyGems","package":"decidim","fixed_in":["0.27.3","0.26.7"],"sources":["ghsa","osv"]},{"ecosystem":"RubyGems","package":"decidim-core","fixed_in":["0.27.3","0.26.7"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"decidim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.27.0"},{"fixed":"0.27.3"}]}]},{"source":"ghsa","ecosystem":"RubyGems","package":"decidim-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.27.0"},{"fixed":"0.27.3"}]}]},{"source":"ghsa","ecosystem":"RubyGems","package":"decidim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.14.0"},{"fixed":"0.26.7"}]}]},{"source":"ghsa","ecosystem":"RubyGems","package":"decidim-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.14.0"},{"fixed":"0.26.7"}]}]},{"source":"osv","ecosystem":"RubyGems","package":"decidim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.14.0"},{"fixed":"0.26.7"}]}],"versions":["0.14.1","0.14.2","0.14.3","0.14.4","0.15.0","0.15.1","0.15.2","0.16.0","0.16.1","0.17.0","0.17.1","0.17.2","0.18.0","0.18.1","0.19.0","0.19.1","0.20.0","0.20.1","0.21.0","0.22.0","0.23.0","0.23.1","0.23.1.rc1","0.23.2","0.23.3","0.23.4","0.23.5","0.23.6","0.24.0","0.24.0.rc1","0.24.0.rc2","0.24.1","0.24.2","0.24.3","0.25.0","0.25.0.rc1","0.25.0.rc2","0.25.0.rc3","0.25.0.rc4","0.25.1","0.25.2","0.26.0","0.26.0.rc2","0.26.1","0.26.2","0.26.3","0.26.4","0.26.5"]},{"source":"osv","ecosystem":"RubyGems","package":"decidim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.27.0"},{"fixed":"0.27.3"}]}],"versions":["0.27.0","0.27.1","0.27.2"]},{"source":"osv","ecosystem":"RubyGems","package":"decidim-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.14.0"},{"fixed":"0.26.7"}]}],"versions":["0.14.1","0.14.2","0.14.3","0.14.4","0.15.0","0.15.1","0.15.2","0.16.0","0.16.1","0.17.0","0.17.1","0.17.2","0.18.0","0.18.1","0.19.0","0.19.1","0.20.0","0.20.1","0.21.0","0.22.0","0.23.0","0.23.1","0.23.1.rc1","0.23.2","0.23.3","0.23.4","0.23.5","0.23.6","0.24.0","0.24.0.rc1","0.24.0.rc2","0.24.1","0.24.2","0.24.3","0.25.0","0.25.0.rc1","0.25.0.rc2","0.25.0.rc3","0.25.0.rc4","0.25.1","0.25.2","0.26.0","0.26.0.rc1","0.26.0.rc2","0.26.1","0.26.2","0.26.3","0.26.4","0.26.5"]},{"source":"osv","ecosystem":"RubyGems","package":"decidim-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.27.0"},{"fixed":"0.27.3"}]}],"versions":["0.27.0","0.27.1","0.27.2"]}],"products":[{"vendor":"decidim","product":"decidim"}],"references":[{"url":"https://github.com/decidim/decidim/security/advisories/GHSA-5652-92r9-3fx9","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/decidim/decidim/releases/tag/v0.26.6","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://github.com/decidim/decidim/releases/tag/v0.27.3","tags":["x_refsource_MISC","x_transferred","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34089","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-core/CVE-2023-34089.yml","tags":["web"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim/CVE-2023-34089.yml","tags":["web"]},{"url":"https://github.com/decidim/decidim/releases/tag/v0.26.7","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5652-92r9-3fx9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34089.json","tags":["advisory"]},{"url":"https://github.com/decidim/decidim","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-34089","title":"Decidim Cross-site Scripting vulnerability in the processes filter","description":"Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing. The problem was patched in version 0.27.3 and 0.26.7.\n","status":"published","published":"2023-07-11T17:36:14.67Z","modified":"2024-11-04T19:55:37.787Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:35:35.912488Z"}],"euvd":[{"id":"EUVD-2023-1963","description":"Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing. The problem was patched in version 0.27.3 and 0.26.7.\n","status":"published","published":"2023-07-11T17:36:14Z","modified":"2024-11-04T19:55:37Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:05:11.298723Z"}],"ghsa":[{"id":"GHSA-5652-92r9-3fx9","title":"Decidim Cross-site Scripting vulnerability in the processes filter","description":"### Impact\n\nThe processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing.\n\n### Patches\n\nThe problem was patched in [v0.27.3](https://github.com/decidim/decidim/releases/tag/v0.27.3) and [v0.26.7](https://github.com/decidim/decidim/releases/tag/v0.26.7)\n","status":"published","published":"2023-07-11T22:46:57Z","modified":"2023-11-29T10:20:09Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:22.840002Z"}],"nvd":[{"id":"CVE-2023-34089","description":"Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing. The problem was patched in version 0.27.3 and 0.26.7.\n","status":"published","published":"2023-07-11T18:15:16.17Z","modified":"2026-06-17T06:02:52.187Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:08:15.91037Z"}],"osv":[{"id":"CVE-2023-34089","title":"Decidim Cross-site Scripting vulnerability in the processes filter","description":"Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing. The problem was patched in version 0.27.3 and 0.26.7.\n","status":"published","published":"2023-07-11T17:36:14.67Z","modified":"2026-10-28T02:30:49.277191196Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:32.116263Z"},{"id":"GHSA-5652-92r9-3fx9","title":"Decidim Cross-site Scripting vulnerability in the processes filter","description":"### Impact\n\nThe processes filter feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing.\n\n### Patches\n\nThe problem was patched in [v0.27.3](https://github.com/decidim/decidim/releases/tag/v0.27.3) and [v0.26.7](https://github.com/decidim/decidim/releases/tag/v0.26.7)\n","status":"published","published":"2023-07-11T22:46:57Z","modified":"2026-09-10T03:50:08.497458363Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:37.864461Z"}]}}