CVE-2026-33400 — Wallos: Stored cross-site scripting (XSS) vulnerability in the payment method rename endpoint
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 end…
Published: 2026-03-24 · CVSS: 5.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7