CVE-2026-81632 — Single-use sign-in token placed in a redirect query string in AshAuthenticationPhoenix

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
team-alembic / ash_authentication_phoenix	affected 1.7.0 before 2.17.4; affected 3.0.0-rc.0 before 3.0.0-rc.11
team-alembic / ash_authentication_phoenix	affected 903f3a386e1aba2f7b070187ef6f31215a92bdfd before *
team-alembic / ash_authentication	affected 3.10.5 before 4.15.0; affected 5.0.0-rc.0 before 5.0.0-rc.14
team-alembic / ash_authentication	affected eca8cadea0f1595ed2c10a0c177b1da9aa9e5269 before *

CWE

CWE-598

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.