Intel/AIKIDO-2026-10198
Flask-Multipass
AIKIDO-2026-10198
Flask-Multipass is vulnerable to Open Redirect
Open Redirect Pre-CVE Published Feb 21, 2026
Found by Aikido Intel before public disclosure or CVE publication.
67
Medium Risk
This Affects:
Flask-Multipass0.0.1 - 0.11.1
Fixed in 0.11.2Are you affected? Scan for Free
TL;DR
Affected versions of this package are vulnerable to open redirect due to insufficient validation of the next URL parameter. Improper handling of backslashes, multiple leading slashes, and crafted netloc values allows attackers to bypass the validation logic and redirect users to external, attacker-controlled domains.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
Flask-Multipass is vulnerable to Open Redirect in versions 0.0.1 - 0.11.1.
How to fix this
Upgrade the Flask-Multipass library to the patch version.
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