{"cve":"CVE-2026-25739","nvd":{"published":"2026-02-19T16:27:15.270","modified":"2026-06-17T10:25:08.660","status":"Analyzed","description":"Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Versions prior to 3.3.10 are vulnerable to cross-site scripting when uploading certain file types as materials. Users should upgrade to version 3.3.10 to receive a patch. To apply the fix itself updating is sufficient, but to benefit from the strict Content Security Policy (CSP) Indico now applies by default for file downloads, update the webserver config in case one uses nginx with Indico's `STATIC_FILE_METHOD` set to `xaccelredirect`. For further directions, consult the GitHub Security advisory or Indico setup documentation. Some workarounds are available. Use the webserver config to apply a strict CSP for material download endpoints, and/or only let trustworthy users create content (including material uploads, which speakers can typically do as well) on Indico.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://github.com/indico/indico/releases/tag/v3.3.10","https://github.com/indico/indico/security/advisories/GHSA-jxc4-54g3-j7vp"],"products":["cern:indico"],"source":"nvd","synced_at":"2026-10-19T22:23:35.260773158+00:00"},"epss":{"cve":"CVE-2026-25739","score":0.00193,"percentile":0.09064,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-jxc4-54g3-j7vp","url":"https://osv.dev/vulnerability/GHSA-jxc4-54g3-j7vp","summary":"Indico Affected by Cross-Site-Scripting via material uploads","modified":"2026-07-13T07:26:47.757858103Z","packages":[{"ecosystem":"PyPI","name":"indico","purl":"pkg:pypi/indico","ranges":["<3.3.10"],"fixed":["3.3.10"]}]},{"id":"PYSEC-2026-2182","url":"https://osv.dev/vulnerability/PYSEC-2026-2182","summary":"","modified":"2026-07-13T07:15:33.055141141Z","packages":[{"ecosystem":"PyPI","name":"indico","purl":"pkg:pypi/indico","ranges":["<3.3.10"],"fixed":["3.3.10"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}