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CVE-2026-25739

CVE-2026-25739 · Indico affected by Cross-Site-Scripting via material uploads

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 5.4 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • indico

    Versions
    • < 3.3.10: Affected

    No fix published

  • indico PyPI

    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
    • 3.3.2
    • 3.3.3
    • 3.3.4
    • 3.3.5
    • 3.3.6
    • 3.3.7
    • 3.3.8
    • 3.3.9
    Affected ranges
    • ECOSYSTEM: < 3.3.10

    Update to 3.3.10

Original sources

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