Indico has a Cross-Site-Scripting during account creation
Impact
There is a Cross-Site-Scripting vulnerability during account creation when redirecting after the account has been successfully created. Exploitation requires the user to initiate the account creation process with a maliciously crafted link, and then finalize the signup process. Because of this, it can only target newly created (and thus unprivileged) Indico users so the benefits of exploiting it are very limited.
Patches
You should to update to Indico 3.3.4 as soon as possible. See the docs for instructions on how to update.
Workarounds
- If you build the Indico package yourself and cannot upgrade for some reason, you can simply update the
flask-multipassdependency to>=0.5.5which fixes the vulnerability. You would do that by editingrequirements.txtbefore building the package (see commit 7dcb573837), or possibly cherry-picking that particular commit. - Otherwise you could configure your web server to disallow requests containing a query string with a parameter that starts with
javascript:
For more information
If you have any questions or comments about this advisory:
- Open a thread in our forum
- Email us privately at indico-team@cern.ch
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | indico | < 3.3.4 | 3.3.4 |
References
- https://github.com/indico/indico/security/advisories/GHSA-rrqf-w74j-24ff
- https://github.com/indico/flask-multipass/commit/0bdcf656d469e5f675cb56fd644d82fea3a97c2a
- https://github.com/indico/indico/commit/7dcb573837b9fd09d95f74d1baeae225b164cc8f
- https://github.com/indico/indico/releases/tag/v3.3.4
- https://nvd.nist.gov/vuln/detail/CVE-2024-45399
- https://github.com/indico/indico
- https://github.com/pypa/advisory-database/tree/main/vulns/indico/PYSEC-2024-90.yaml
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-1395, CWE-79- Platform
- Python (PyPI)
- Package
indico- Disclosed
- 04.09.2024
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2024-90 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-rrqf-w74j-24ff - CC BY 4.0
Vulnerability history: indico
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 16
- First → latest
- 10.2019 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 13
Disclosures per year
- 2019: 1
- 2020: 0
- 2021: 1
- 2022: 0
- 2023: 1
- 2024: 1
- 2025: 4
- 2026: 8
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Indico has a Cross-Site-Scripting during account creation this entry
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