Vulnerability · Published Oct 8, 2026 · Assigned by GitHub_M

CVE-2026-107397Indico: Cross-Site-Scripting in minutes editor

Medium 4.4

In plain English

A medium-severity cross-site scripting in indico from indico. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.4Medium

Exploit odds (30 days)0.2%top 85.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	indico	3.3.13	GHSA-cw24-x4mj-fw3q
PyPI	indico	3.3.13	PYSEC-2026-4228

Affected products (as reported)

Vendor	Product	Versions
indico	indico	< 3.3.13

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/indico/indico/security/advisories/GHSA-cw24-x4mj-fw3q x_refsource_CONFIRM
https://github.com/indico/indico/pull/7619 x_refsource_MISC
https://github.com/indico/indico/commit/d4c8c7127176efa4cb53c64119ca8ee2b551be18 x_refsource_MISC
https://github.com/indico/indico/releases/tag/v3.3.13 x_refsource_MISC