Security Advisory

CVE-2026-33400

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-24 17:45:27

Last updated 2026-03-24 20:21:38

Assigner GitHub_M

State PUBLISHED

Description

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, a stored cross-site scripting (XSS) vulnerability in the payment method rename endpoint allows any authenticated user to inject arbitrary JavaScript that executes when any user visits the Settings, Subscriptions, or Statistics pages. Combined with the wallos_login authentication cookie lacking the HttpOnly flag, this enables full session hijacking. This issue has been patched in version 4.7.0.

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