AIKIDO-2026-10919
flet is vulnerable to Session fixation
28
Low Risk
This Affects:
fletTL;DR
When running a Flet app in web browser mode, affected versions allow cross-tab session contamination because duplicated tabs can reuse the same session_id and improperly take over an active session connection. An attacker could exploit this by causing a victim to open or duplicate the same app session in another browser tab, leading to UI desynchronization, unintended actions being applied to the wrong tab, and denial of service of the original session through connection hijacking.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
flet is vulnerable to Session fixation in versions 0.80.0 - 0.85.1.
How to fix this
Upgrade the flet library to the patch version.
Are You Affected?
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SOC 2Compliant
ISO 27001Compliant