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OpenAdvisories
Medium · 6.3 CVE-2026-110826 EEF-CVE-2026-110826EUVD-2026-116148GHSA-j6f8-qcj9-gh4r

AshAuthentication log_out_everywhere leaves sessions valid after a password reset or non-atomic password change

Published Nov 3, 2026 · Updated Nov 3, 2026 · Assigned by EEF

Description

Improper Session Invalidation after Authentication Credential Change vulnerability in team-alembic ash_authentication allows an attacker holding a victim's session token to stay signed in after the victim resets or changes their password.

With apply_on_password_change? true, AshAuthentication.AddOn.LogOutEverywhere.Transformer adds OnPasswordChange to update actions as a global change guarded by where: changing(hashed_password). That condition is evaluated before the action's before_action hooks run, but AshAuthentication.Strategy.Password.HashPasswordChange sets the new hash in a before_action hook, so for every non-atomic password change the condition is false and the user's stored tokens are not revoked. The generated password reset action and the installer's change_password action are both non-atomic.

This issue affects ash_authentication: from 4.5.0 before 4.15.1 and from 5.0.0-rc.0 before 5.0.0-rc.16.

Affected products

VendorProductAffectedFixed
team-alembic ash_authentication 4.5.0 – < 4.15.1, 5.0.0-rc.0 – < 5.0.0-rc.16 4.15.1

Affected packages

EcosystemPackageAffectedFixedRecord
Hex ash_authentication >= 4.5.0, < 4.15.1 · >= 5.0.0-rc.0, < 5.0.0-rc.16 4.15.1, 5.0.0-rc.16 EEF-CVE-2026-110826

References