CVE-2026-107396CWE-692

CVE-2026-107396

Medium · published October 9, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

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 manage events or create content, including speakers who can upload material, can store crafted javascript URLs in fields that accept custom URLs. A user who follows one of these URLs can execute attacker-controlled script in the user's browser in the Indico origin. This issue is fixed in version 3.3.13.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00195 · 8.7th percentile
Weakness
CWE-692 · Incomplete Denylist to Cross-Site Scripting
Published
2026-10-09T00:17Z
References (4)
https://github.com/indico/indico/commit/d4c8c7127176efa4cb53c64119ca8ee2b551be18 · [email protected]https://github.com/indico/indico/pull/7619 · [email protected]https://github.com/indico/indico/releases/tag/v3.3.13 · [email protected]https://github.com/indico/indico/security/advisories/GHSA-c4wc-ggrj-jg9v · [email protected]
EPSS history
Timeline
  • 10 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 08 OCT 20:00Z
    Indico: Cross-Site-Scripting in link fields
    cvelistv5
  • 08 OCT 20:00Z
    Indico: Cross-Site-Scripting in link fields
    cvelistv5