Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-33400

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.6%
CVSS Severity
CVSS v3 Score 5.4
Products affected by CVE-2026-33400


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