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TI-2024-30448 Aliases CVE-2024-45399GHSA-rrqf-w74j-24ff

Indico has a Cross-Site-Scripting during account creation

Priority LOW 27CWE-1395Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. In Indico prior to version 3.3.4, corresponding to Flask-Multipass prior to version 0.5.5, there is a Cross-Site-Scripting vulnerability during account creation when redirecting to the `next` URL. Exploitation requires initiating the account creation process with a maliciously crafted link, and then finalizing the signup process. Because of this, it can only target newly created (and thus unprivileged) Indico users. Indico 3.3.4 upgrades the dependency on Flask-Multipass to version 0.5.5, which fixes the issue. Those who build the Indico package themselves and cannot upgrade can update the `flask-multipass` dependency to `>=0.5.5` which fixes the vulnerability. Otherwise one could configure one's web server to disallow requests containing a query string with a `next` parameter that starts with `javascript:`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00383 32nd percentileScored 2026-11-07
Fix Fixed indico (indico): 3.3.4indico (PyPI): 3.3.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
indicoindicobefore 3.3.43.3.4Patch availableCNA
—indico (PyPI)before 3.3.43.3.4Patch availableGHSA-rrqf-w74j-24ff
  • indico Vendorindico Affected before 3.3.4 Fixed in 3.3.4 Patch available CNA
  • indico (PyPI) Vendor— Affected before 3.3.4 Fixed in 3.3.4 Patch available GHSA-rrqf-w74j-24ff

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:*before 3.3.4Vulnerableindico
  • cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:* Versions before 3.3.4 Vulnerable ·indico

Remediation

  • Fix · CNA indico (indico) Fixed in 3.3.4
  • Fix · GHSA-rrqf-w74j-24ff indico (PyPI) Fixed in 3.3.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-45399
  2. 2026-10-03 Alias added: GHSA-rrqf-w74j-24ff

References

Patch 2

Advisory 2

Other 3

  • TI-2024-34052 Authorization bypass in Indico CVSS 3.1HIGH 7.5
  • TI-2026-25492 Indico discloses local files resulting in Remote Code Execution through LaTeX injection CVSS 4.0HIGH 7.7
  • TI-2026-20806 Indico has Server-Side Request Forgery (SSRF) in multiple places CVSS 4.0MEDIUM 6.9
  • TI-2026-22632 Indico missing access check in event series management API CVSS 3.1MEDIUM 6.5
  • TI-2021-10724 CERN Indico before 2.3.4 can use an attacker-supplied Host header in a password reset link. CVSS 3.1HIGH 7.5
  • TI-2025-33566 Indico vulnerable to user enumeration via API endpoint CVSS 4.0MEDIUM 5.3
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences