{"id":"CVE-2026-107397","aliases":["EUVD-2026-95253","GHSA-cw24-x4mj-fw3q","PYSEC-2026-4228"],"status":"published","title":"Indico: Cross-Site-Scripting in minutes editor","description":"Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, users who can create content, including speakers who can create minutes, can store crafted HTML in event minutes. When concurrent edits are made to the same minutes, the minute editor conflict UI can execute attacker-controlled script in the viewer's browser in the Indico origin. This issue is fixed in version 3.3.13.","severity":{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00233,"percentile":0.14275,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-10-08T20:01:56Z","modified":"2026-10-28T02:30:56Z","fixes":[{"ecosystem":"PyPI","package":"indico","fixed_in":["3.3.13"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"indico","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.13"}]}]},{"source":"osv","ecosystem":"PyPI","package":"indico","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.13"}]}],"versions":["0.98-rc1","0.98.0","0.98.1","0.98.2","0.99","1.0","1.1","1.1.1","1.1.2","1.2","1.2.1","1.2.1rc10","1.2.1rc11","1.2.1rc2","1.2.1rc4","1.2.1rc5","1.2.1rc6","1.2.1rc7","1.2.1rc9","1.2.2","1.2.2rc1","1.9.11.dev10","1.9.11.dev11","1.9.11.dev12","1.9.11.dev13","1.9.11.dev14","1.9.11.dev15","1.9.11.dev16","1.9.11.dev17","1.9.11.dev3","1.9.11.dev4","1.9.11.dev6","1.9.11.dev7","1.9.11.dev8","1.9.11.dev9","2.0","2.0.1","2.0.2","2.0.3","2.0a1","2.0rc1","2.0rc2","2.1","2.1.1","2.1.10","2.1.11","2.1.2","2.1.3","2.1.4","2.1.5","2.1.6","2.1.7","2.1.8","2.1.9","2.2","2.2.1","2.2.2","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","2.3","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","3.0","3.0.1","3.0.2","3.0.3","3.0rc1","3.0rc2","3.1","3.1.1","3.2","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","3.3","3.3.1","3.3.10","3.3.11","3.3.12","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.3.7","3.3.8","3.3.9"]},{"source":"osv","ecosystem":"PyPI","package":"indico","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.3.13"}]}],"versions":["0.98-rc1","0.98.0","0.98.1","0.98.2","0.99","1.0","1.1","1.1.1","1.1.2","1.2","1.2.1","1.2.1rc10","1.2.1rc11","1.2.1rc2","1.2.1rc4","1.2.1rc5","1.2.1rc6","1.2.1rc7","1.2.1rc9","1.2.2","1.2.2rc1","1.9.11.dev10","1.9.11.dev11","1.9.11.dev12","1.9.11.dev13","1.9.11.dev14","1.9.11.dev15","1.9.11.dev16","1.9.11.dev17","1.9.11.dev3","1.9.11.dev4","1.9.11.dev6","1.9.11.dev7","1.9.11.dev8","1.9.11.dev9","2.0","2.0.1","2.0.2","2.0.3","2.0a1","2.0rc1","2.0rc2","2.1","2.1.1","2.1.10","2.1.11","2.1.2","2.1.3","2.1.4","2.1.5","2.1.6","2.1.7","2.1.8","2.1.9","2.2","2.2.1","2.2.2","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","2.3","2.3.1","2.3.2","2.3.3","2.3.4","2.3.5","3.0","3.0.1","3.0.2","3.0.3","3.0rc1","3.0rc2","3.1","3.1.1","3.2","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.2.6","3.2.7","3.2.8","3.2.9","3.3","3.3.1","3.3.10","3.3.11","3.3.12","3.3.2","3.3.3","3.3.4","3.3.5","3.3.6","3.3.7","3.3.8","3.3.9"]}],"products":[{"vendor":"indico","product":"indico"}],"references":[{"url":"https://github.com/indico/indico/security/advisories/GHSA-cw24-x4mj-fw3q","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/indico/indico/pull/7619","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/indico/indico/commit/d4c8c7127176efa4cb53c64119ca8ee2b551be18","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/indico/indico/releases/tag/v3.3.13","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107397","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-cw24-x4mj-fw3q","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107397.json","tags":["advisory"]},{"url":"https://github.com/indico/indico","tags":["package"]},{"url":"https://pypi.org/project/indico","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-107397","title":"Indico: Cross-Site-Scripting in minutes editor","description":"Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, users who can create content, including speakers who can create minutes, can store crafted HTML in event minutes. When concurrent edits are made to the same minutes, the minute editor conflict UI can execute attacker-controlled script in the viewer's browser in the Indico origin. This issue is fixed in version 3.3.13.","status":"published","published":"2026-10-08T20:01:56.769Z","modified":"2026-10-13T16:15:08.869Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:45:25.313702Z"}],"euvd":[{"id":"EUVD-2026-95253","description":"Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, users who can create content, including speakers who can create minutes, can store crafted HTML in event minutes. When concurrent edits are made to the same minutes, the minute editor conflict UI can execute attacker-controlled script in the viewer's browser in the Indico origin. This issue is fixed in version 3.3.13.","status":"published","published":"2026-10-08T20:01:56Z","modified":"2026-10-13T16:15:08Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T17:27:20.028612Z"}],"ghsa":[{"id":"GHSA-cw24-x4mj-fw3q","title":"Indico: Cross-Site-Scripting in minutes editor","description":"### Impact\nThere is a Cross-Site-Scripting vulnerability in the minute editor conflict UI tha's shown when concurrent edits are made to the same minutes in an event.\n\n### Patches\nYou should to update to [Indico 3.3.13](https://github.com/indico/indico/releases/tag/v3.3.13) as soon as possible.\nSee [the docs](https://docs.getindico.io/en/stable/installation/upgrade/) for instructions on how to update.\n\n### Workarounds\n- Set `CSP_ENABLED = True` in `indico.conf` - **this is recommended regardless of updating**.\n- Only let trustworthy users create content (including minutes which speakers can typically do as well) on Indico.\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open a thread in [our forum](https://talk.getindico.io/)\n- Email us privately at [indico-team@cern.ch](mailto:indico-team@cern.ch)","status":"published","published":"2026-10-08T22:09:45Z","modified":"2026-10-08T22:09:46Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:41:30.097746Z"}],"nvd":[{"id":"CVE-2026-107397","description":"Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, users who can create content, including speakers who can create minutes, can store crafted HTML in event minutes. When concurrent edits are made to the same minutes, the minute editor conflict UI can execute attacker-controlled script in the viewer's browser in the Indico origin. This issue is fixed in version 3.3.13.","status":"published","published":"2026-10-08T21:17:51.937Z","modified":"2026-10-13T17:17:16.74Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:55.142936Z"}],"osv":[{"id":"CVE-2026-107397","title":"Indico: Cross-Site-Scripting in minutes editor","description":"Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, users who can create content, including speakers who can create minutes, can store crafted HTML in event minutes. When concurrent edits are made to the same minutes, the minute editor conflict UI can execute attacker-controlled script in the viewer's browser in the Indico origin. This issue is fixed in version 3.3.13.","status":"published","published":"2026-10-08T20:01:56.769Z","modified":"2026-10-28T02:30:56.812972059Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:54.933106Z"},{"id":"GHSA-cw24-x4mj-fw3q","title":"Indico: Cross-Site-Scripting in minutes editor","description":"### Impact\nThere is a Cross-Site-Scripting vulnerability in the minute editor conflict UI tha's shown when concurrent edits are made to the same minutes in an event.\n\n### Patches\nYou should to update to [Indico 3.3.13](https://github.com/indico/indico/releases/tag/v3.3.13) as soon as possible.\nSee [the docs](https://docs.getindico.io/en/stable/installation/upgrade/) for instructions on how to update.\n\n### Workarounds\n- Set `CSP_ENABLED = True` in `indico.conf` - **this is recommended regardless of updating**.\n- Only let trustworthy users create content (including minutes which speakers can typically do as well) on Indico.\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open a thread in [our forum](https://talk.getindico.io/)\n- Email us privately at [indico-team@cern.ch](mailto:indico-team@cern.ch)","status":"published","published":"2026-10-08T22:09:45Z","modified":"2026-10-15T14:56:21.251667589Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:45.639885Z"},{"id":"PYSEC-2026-4228","title":"Indico: Cross-Site-Scripting in minutes editor","description":"### Impact\nThere is a Cross-Site-Scripting vulnerability in the minute editor conflict UI tha's shown when concurrent edits are made to the same minutes in an event.\n\n### Patches\nYou should to update to [Indico 3.3.13](https://github.com/indico/indico/releases/tag/v3.3.13) as soon as possible.\nSee [the docs](https://docs.getindico.io/en/stable/installation/upgrade/) for instructions on how to update.\n\n### Workarounds\n- Set `CSP_ENABLED = True` in `indico.conf` - **this is recommended regardless of updating**.\n- Only let trustworthy users create content (including minutes which speakers can typically do as well) on Indico.\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open a thread in [our forum](https://talk.getindico.io/)\n- Email us privately at [indico-team@cern.ch](mailto:indico-team@cern.ch)","status":"published","published":"2026-10-15T10:22:53.930298Z","modified":"2026-10-15T14:45:06.44989811Z","cvss":[{"version":"3.1","score":4.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:57.671918Z"}]}}