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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecef	Patch
https://github.com/ellite/Wallos/security/advisories/GHSA-p6v5-227f-f3fv	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wallosapp:wallos:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-24 18:16

Updated : 2026-03-26 20:39

NVD link : CVE-2026-33400

Mitre link : CVE-2026-33400

CVE.ORG link : CVE-2026-33400

JSON object : View

Products Affected

wallosapp

wallos

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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