CVE-2026-25738

Indico is an event management system that uses Flask-Multipass, a multi-backend authentication system for Flask. Versions prior to 3.3.10 are vulnerable to server-side request forgery. Indico makes outgoing requests to user-provides URLs in various places. This is mostly intentional and part of Indico's functionality but is never intended to let users access "special" targets such as localhost or cloud metadata endpoints. Users should upgrade to version 3.3.10 to receive a patch. Those who do not have IPs that expose sensitive data without authentication (typically because they do not host Indico on AWS) are not affected. Only event organizers can access endpoints where SSRF could be used to actually see the data returned by such a request. For those who trust their event organizers, the risk is also very limited. For additional security, both before and after patching, one may also use the common proxy-related environment variables (in particular `http_proxy` and `https_proxy`) to force outgoing requests to go through a proxy that limits requests in whatever way you deem useful/necessary. These environment variables would need to be set both on the indico-uwsgi and indico-celery services.
Configurations

Configuration 1 (hide)

cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:*

History

26 Feb 2026, 02:57

Type Values Removed Values Added
References () https://github.com/indico/indico/commit/70d341826116fac5868719a6133f2c26d9345137 - () https://github.com/indico/indico/commit/70d341826116fac5868719a6133f2c26d9345137 - Patch
References () https://github.com/indico/indico/releases/tag/v3.3.10 - () https://github.com/indico/indico/releases/tag/v3.3.10 - Release Notes
References () https://github.com/indico/indico/security/advisories/GHSA-f47c-3c5w-v7p4 - () https://github.com/indico/indico/security/advisories/GHSA-f47c-3c5w-v7p4 - Vendor Advisory, Mitigation
CPE cpe:2.3:a:cern:indico:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 4.3
First Time Cern
Cern indico

19 Feb 2026, 16:27

Type Values Removed Values Added
New CVE

Information

Published : 2026-02-19 16:27

Updated : 2026-02-26 02:57


NVD link : CVE-2026-25738

Mitre link : CVE-2026-25738

CVE.ORG link : CVE-2026-25738


JSON object : View

Products Affected

cern

  • indico
CWE
CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

CWE-918

Server-Side Request Forgery (SSRF)