What’s Vulnerable › Vulnerabilities

CVE-2025-4754: Missing Session Revocation on Logout in ash_authentication_phoenix

• Severity: low (CVSS 2.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-17 · updated 2026-09-22
• Weakness: CWE-613

Description

Insufficient Session Expiration vulnerability in team-alembic ash_authentication_phoenix allows a session token captured before sign-out to remain usable afterwards. The default sign_out/2 that AshAuthentication.Phoenix.Controller injects into an application's auth controller only calls Plug.Conn.clear_session/1. It never revokes the stored session or bearer tokens, so a token obtained before sign-out, through script injection, interception or device theft, keeps authenticating until its own expiry. Changing the password still revokes it. This issue affects ash_authentication_phoenix: from 0.1.0 before 2.10.0.

Affected products

• team-alembic ash_authentication_phoenix: from 0.1.0 before 2.10.0 — fixed in 2.10.0

How to fix

Upgrade to a fixed version: team-alembic ash_authentication_phoenix 2.10.0. Check the vendor advisory for mitigations.

References

• https://cna.erlef.org/cves/CVE-2025-4754.html
• https://github.com/team-alembic/ash_authentication_phoenix/commit/05ab4f438bf0cd0fdfb279d912bbe0d2c3620e02
• https://github.com/team-alembic/ash_authentication_phoenix/commit/a3253fb4fc7145aeb403537af1c24d3a8d51ffb1
• https://github.com/team-alembic/ash_authentication_phoenix/pull/634
• https://github.com/team-alembic/ash_authentication_phoenix/security/advisories/GHSA-f7gq-h8jv-h3cq
• https://osv.dev/vulnerability/EEF-CVE-2025-4754

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