CVE-2026-107394 Indico: Incomplete Server-Side Request Forgery (SSRF) check
An event organizer can bypass SSRF protections to read data from prohibited local targets via crafted URLs in Indico.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107394?
CVE-2026-107394 is a medium-severity server-side request forgery vulnerability in indico, published on 8 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Prior to 3.3.13, the previous fix for CVE-2026-25738 did not cover an edge case, allowing an event organizer to submit a crafted URL that points to a prohibited local target but is accepted as valid by Indico. The organizer can read data returned by the target through affected Indico features. This issue is fixed in version 3.3.13.
Weakness: CWE-918
Which versions are affected by CVE-2026-107394?
3 open source packages ship an affected version, including indico.
| Package | Affected | Fixed in |
|---|---|---|
indico PyPI | All versions | 3.3.13 |
indico PyPI | All versions | 3.3.13 |
indico PyPI | All versions | 3.3.13 |
How do I fix CVE-2026-107394?
Upgrade indico to 3.3.13 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-107394 being exploited?
There is no known exploitation of CVE-2026-107394 in the wild and no public exploit code.
Sources
Also known as GHSA-2v95-h47v-g4x9, PYSEC-2026-4225.