AIKIDO-2025-10194
synapse is vulnerable to Authentication Bypass
22
Low Risk
This Affects:
synapseTL;DR
Affected versions of this package are affected by a vulnerability where locked users could still access authenticated HTTP endpoints using an existing session cookie, bypassing account lock restrictions. User lock status now properly invalidates active sessions across all endpoints. An attacker could exploit this by retaining a valid session cookie after account lockout, leading to unauthorized access to authenticated endpoints.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
synapse is vulnerable to Authentication Bypass in versions 2.177.0 - 2.203.0.
How to fix this
Upgrade the synapse library to the patch version.
Are You Affected?
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SOC 2Compliant
ISO 27001Compliant