What is CVE-2026-25738?

CVE-2026-25738 is a medium-severity vulnerability in Cern Indico, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 4.3/10. Published 2026-02-19.

How severe is CVE-2026-25738?

Medium severity. CVSS v3 base score is 4.3 out of 10.

SSRF in Cern Indico

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 i…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.002 (8.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Cern Indico
Indico — versions < 3.3.10

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-25738?: CVE-2026-25738 is a medium-severity vulnerability in Cern Indico, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 4.3/10. Published 2026-02-19.
How severe is CVE-2026-25738?: Medium severity. CVSS v3 base score is 4.3 out of 10.