CVE-2026-107396 json
Indico: Cross-Site-Scripting in link fields
published 2026-10-08 31 d ago modified 2026-10-15 25 d ago also EUVD-2026-95214 , GHSA-c4wc-ggrj-jg9v , PYSEC-2026-4227
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi indico 3.3.13
- cern indico 3.3.13
- github.com/indico/indico@d4c8c71 commit
- github.com/indico/indico#7619 pull request
- github.com/indico/indico/releases/tag/v3.3.13 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 31 d ago
Exploit prediction
0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | indico | <3.3.13 |
3.3.13 |
Affected products
- indico indico
Classification
- Weakness
-
- CWE-692 Incomplete Denylist to Cross-Site Scripting
References
-
github.com
/indico/indico/pull/7619
web
-
github.com
/indico/indico/commit/d4c8c7127176efa4cb53c64119ca8ee2b551be18
web
-
github.com
/indico/indico/security/advisories/GHSA-c4wc-ggrj-jg9v
web
-
github.com
/indico/indico/releases/tag/v3.3.13
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-107396
advisory
-
github.com
/indico/indico
package
-
pypi.org
/project/indico
package
-
github.com
/advisories/GHSA-c4wc-ggrj-jg9v
advisory
Sources
- CVE List CVE-2026-107396
- GitHub Advisory GHSA-c4wc-ggrj-jg9v
- NVD CVE-2026-107396
- OSV PYSEC-2026-4227
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.