TI-2026-69690 Aliases CVE-2026-107396 GHSA-c4wc-ggrj-jg9v

Cross-site scripting in Indico link fields

LOW 24CWE-692Published 2026-10-08 · Updated 2026-10-09

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Indico versions before 3.3.13 are affected. An incomplete denylist fails to block crafted javascript URLs in fields that accept custom URLs (CWE-692). A user who can manage events or create content, including speakers who upload material, can store such a URL, and a user who follows it runs attacker-controlled script in the Indico origin in their browser.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00195 9th percentileScored 2026-11-07

Fix Fixed indico (indico): 3.3.13indico (PyPI): 3.3.13

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

Vendor	Product	Affected versions	Fixed in	Status	Source
indico	indico	before 3.3.13	3.3.13	Patch available	CNA
—	indico (PyPI)	before 3.3.13	3.3.13	Patch available	GHSA-c4wc-ggrj-jg9v

indico Vendorindico Affected before 3.3.13 Fixed in 3.3.13 Patch available CNA
indico (PyPI) Vendor— Affected before 3.3.13 Fixed in 3.3.13 Patch available GHSA-c4wc-ggrj-jg9v

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:cern:indico::::::::	—	—	indico

cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:* Versions — — ·indico

Remediation

Upgrade the PyPI package indico to version 3.3.13, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Fix · CNA indico (indico) Fixed in 3.3.13
Fix · GHSA-c4wc-ggrj-jg9v indico (PyPI) Fixed in 3.3.13 Advisory →

Timeline

2026-10-09 Threatist record created from CVE-2026-107396
2026-10-09 Alias added: GHSA-c4wc-ggrj-jg9v
2026-10-10 CISA SSVC decision points changed
2026-10-10 Priority changed: MEDIUM → LOW

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-107396

Other 5

TI-2024-34052 Authorization bypass in Indico CVSS 3.1HIGH 7.5
TI-2026-85686 Authorisation bypass in Rucio REST API lets users get signed URLs CVSS 3.1HIGH 8.1
TI-2026-20298 Rucio WebUI has a Reflected Cross-site Scripting Vulnerability CVSS 3.1HIGH 8.1
TI-2026-20801 Rucio WebUI Vulnerable to Stored Cross-site Scripting (XSS) through Custom Rule Function CVSS 3.1HIGH 7.3
TI-2026-20300 Rucio WebUI has Username Enumeration via Login Error Message CVSS 3.1MEDIUM 5.3
TI-2026-20804 Rucio WebUI has a Stored Cross-site Scripting (XSS) Vulnerability in its Custom RSE Attribute CVSS 3.1MEDIUM 6.1

See all 28 →

Sources

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