CVE-2026-54599 — Wallos: OIDC state parameter never validated — login CSRF / account takeover
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.4, login.php generates an OIDC state nonce stored in $_SESSION['oidc_state'], but che…
Published: 2026-08-31 · CVSS: 7.5 · CVSS 4.0
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.4, login.php generates an OIDC state nonce stored in $_SESSION['oidc_state'], but checksession.php dispatches the OIDC callback without comparing the incoming state against the session value. An attacker can trick a victim into visiting a crafted URL, causing Wallos to exchange the attacker's authorization code and log the victim into the attacker's account. This issue has been patched in version 4.9.4.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7