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CVE-2026-81632NVD
Vulnerability Summary
Use of HTTP Request With Sensitive Query String vulnerability in team-alembic AshAuthenticationPhoenix allows someone able to read access logs, proxy logs or browser history to recover a single-use sign-in token and authenticate as its owner.
After a successful password sign-in, AshAuthentication.Phoenix.Components.Password.SignInForm builds the sign_in_with_token path with the freshly issued user.__metadata__.token as a query parameter and redirects the browser to it with a GET. The token therefore travels in the request line, where web servers, reverse proxies, request telemetry and the browser's own history record it, all of which outlive the request and are ordinarily less protected than session storage. The redirect destination is restricted to a local path, so this is not an open redirect; the exposure is the retention of a live credential.
This issue affects ash_authentication_phoenix: from 1.7.0 before 2.17.4 and from 3.0.0-rc.0 before 3.0.0-rc.11; ash_authentication: from 3.10.5 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.
After a successful password sign-in, AshAuthentication.Phoenix.Components.Password.SignInForm builds the sign_in_with_token path with the freshly issued user.__metadata__.token as a query parameter and redirects the browser to it with a GET. The token therefore travels in the request line, where web servers, reverse proxies, request telemetry and the browser's own history record it, all of which outlive the request and are ordinarily less protected than session storage. The redirect destination is restricted to a local path, so this is not an open redirect; the exposure is the retention of a live credential.
This issue affects ash_authentication_phoenix: from 1.7.0 before 2.17.4 and from 3.0.0-rc.0 before 3.0.0-rc.11; ash_authentication: from 3.10.5 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.
CVSS v4.0 Base Metrics — Score 7.2 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Attack RequirementsPresent
Privileges RequiredLow
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)None
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Affected & Patched Versions
- team-alembic ash_authentication_phoenix >= 1.7.0 and < 2.17.4
- team-alembic ash_authentication_phoenix >= 3.0.0-rc.0 and < 3.0.0-rc.11
- team-alembic ash_authentication_phoenix >= 903f3a386e1aba2f7b070187ef6f31215a92bdfd and < *
- team-alembic ash_authentication >= 3.10.5 and < 4.15.0
- team-alembic ash_authentication >= 5.0.0-rc.0 and < 5.0.0-rc.14
- team-alembic ash_authentication >= eca8cadea0f1595ed2c10a0c177b1da9aa9e5269 and < *
- team-alembic ash_authentication_phoenix 2.17.4
- team-alembic ash_authentication_phoenix 3.0.0-rc.11
- team-alembic ash_authentication_phoenix *
- team-alembic ash_authentication 4.15.0
- team-alembic ash_authentication 5.0.0-rc.14
- team-alembic ash_authentication *
External References
- https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/GHSA-8jh5-339h-mqx9
- https://cna.erlef.org/cves/CVE-2026-81632.html
- https://osv.dev/vulnerability/EEF-CVE-2026-81632
- https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-j726-59hm-r46r
- https://github.com/team-alembic/ash_authentication_phoenix/commit/903f3a386e1aba2f7b070187ef6f31215a92bdfd
- https://github.com/team-alembic/ash_authentication_phoenix/commit/920257d0460b9c7cbb42a83d0888c10f4eeeb88a
- https://github.com/team-alembic/ash_authentication_phoenix/commit/ff5ad8737748afed9cdfde3ec3a05b8a4702a742
- https://github.com/team-alembic/ash_authentication/commit/eca8cadea0f1595ed2c10a0c177b1da9aa9e5269
- https://github.com/team-alembic/ash_authentication/commit/bbf345c1bb7aa28bce5dd856ac0ed2427f103859
- https://github.com/team-alembic/ash_authentication/commit/8d8ddd25c69b669a92a701af74bff42e1aada998