CVE-2026-0650: Openflagr Flagr

Critical severity, CVSS 9.3. EPSS: 1.5% chance of exploitation in the next 30 days.

OpenFlagr versions prior to and including 1.1.18 contain an authentication bypass vulnerability in the HTTP middleware. Due to improper handling of path normalization in the whitelist logic, crafted requests can bypass authentication and access protected API endpoints without valid credentials. Unauthorized access may allow modification of feature flags and export of sensitive data.

Affected products

• Openflagr Flagr: up to and including 1.1.18

Published 2026-01-07. Last modified 2026-10-08.