PT-2026-27469 · Ellite · Wallos

Published 2026-03-24 · Updated 2026-03-24 · CVE-2026-33400

NVD

CVSS v3.1

5.4

Medium

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-33400

Affected Products

Wallos

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-33400 · Security Note
• https://github.com/ellite/Wallos/security/advisories/GHSA-p6v5-227f-f3fv · Note
• https://github.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecef · Note