CVE-2026-110826 Details
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.
A vulnerability exists in the Team Alembic Ash Authentication library, specifically in versions 4.5.0 prior to 4.15.1 and 5.0.0-rc.0 prior to 5.0.0-rc.16. This vulnerability allows an attacker with a valid session token to remain authenticated after the user has reset or changed their password. The issue arises because the 'log_out_everywhere' add-on, which is enabled by default, fails to revoke tokens during non-atomic password changes. As a result, users' sessions remain active, creating a potential security risk.
Users can update to Ash Authentication versions 4.15.1 or 5.0.0-rc.16, where this issue has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 3, 2026CISA-ADP
Assessed Nov 3, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cna.erlef.org/cves/CVE-2026-110826.html | EEF | AdvisoryBundle |
| https://github.com/team-alembic/ash_authentication/commit/0993f944fbd8d668f941d2ca818da4a1d5917641 | EEF | Source CodeVendor |
| https://github.com/team-alembic/ash_authentication/commit/2baef4eddeb604569d3564273d03eeef438e002c | EEF | Source CodeVendor |
| https://github.com/team-alembic/ash_authentication/commit/954697f168d55112b5050acddcd936b8bc1fba2b | EEF | Source CodeVendor |
| https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-j6f8-qcj9-gh4r | EEF | AdvisoryRemedyVendor |
| https://osv.dev/vulnerability/EEF-CVE-2026-110826 | EEF | AdvisoryBundle |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| team-alembic ash_authentication | >= 4.5.0, < 4.15.1 (semver) >= 5.0.0-rc.0, < 5.0.0-rc.16 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 3, 2026 | New CVE Received | EEF |
| Nov 3, 2026 | CVE Modified | CISA-ADP |