Improper Session Invalidation after Authentication Credential Change vulnerability in team-alembic ashauthentication allows an attacker…
CVE-2026-110826
Improper Session Invalidation after Authentication Credential Change vulnerability in team-alembic ashauthentication allows an attacker holding a victim's session token to stay signed in after the victim resets or changes their password. With applyonpasswordchange? true, AshAuthentication.AddOn.LogOutEverywhere.Transformer adds OnPasswordChange to update actions as a global change guarded by where: changing(hashedpassword). That condition is evaluated before the action's beforeaction hooks run, but AshAuthentication.Strategy.Password.HashPasswordChange sets the new hash in a beforeaction 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 changepassword action are both non-atomic. This issue affects ashauthentication: from 4.5.0 before 4.15.1 and from 5.0.0-rc.0 before 5.0.0-rc.16.
Assessment
- CVSS
- 6.3 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 3 November 2026
- Last updated
- 3 November 2026
- Affected
- team-alembic · ash_authentication
- Assigner
- EEF
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
At the source
References
- https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-j6f8-qcj9-gh4r
- https://cna.erlef.org/cves/CVE-2026-110826.html
- https://osv.dev/vulnerability/EEF-CVE-2026-110826
- https://github.com/team-alembic/ash_authentication/commit/0993f944fbd8d668f941d2ca818da4a1d5917641
- https://github.com/team-alembic/ash_authentication/commit/954697f168d55112b5050acddcd936b8bc1fba2b
- https://github.com/team-alembic/ash_authentication/commit/2baef4eddeb604569d3564273d03eeef438e002c
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