Unrated severityNVD Advisory· Published Mar 24, 2026· Updated Mar 24, 2026
Wallos: Stored cross-site scripting (XSS) vulnerability in the payment method rename endpoint
CVE-2026-33400
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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Affected products
2Patches
Vulnerability mechanics
References
2- github.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecefmitrex_refsource_MISC
- github.com/ellite/Wallos/security/advisories/GHSA-p6v5-227f-f3fvmitrex_refsource_CONFIRM
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