CVE-2026-33401 Wallos: Incomplete fix for CVE-2026-30840 - SSRF in AI and notification endpoints bypass ssrf_helper.php

High 7.1 Published 24 Mar 2026 Updated 24 Mar 2026

Authenticated users can exploit SSRF in AI and notification endpoints to access internal network services and cloud metadata.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-33401?

CVE-2026-33401 is a high-severity server-side request forgery vulnerability in ellite Wallos, published on 24 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, the patch introduced in commit e8a513591 (CVE-2026-30840) added SSRF protection to notification test endpoints but left three additional attack surfaces unprotected: the AI Ollama host parameter, the AI recommendations endpoint, and the notification cron job. An authenticated user can reach internal network services, cloud metadata endpoints (AWS IMDSv1, GCP, Azure IMDS), or localhost-bound services by supplying a crafted URL to any of these endpoints. This issue has been patched in version 4.7.0.

Weakness: CWE-918

Which versions are affected by CVE-2026-33401?

It affects 1 product.

Products include Wallosapp Wallos.

How do I fix CVE-2026-33401?

No fix has been published for CVE-2026-33401 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-33401 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33401 exists.

Sources

Also known as GHSA-r82v-p8cg-rgx3.