CVE-2026-33401: Wallos: Incomplete fix for CVE-2026-30840 - SSRF in AI and notification endpoints bypass ssrf_helper.php
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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2026-33401?
CVE-2026-33401 has a medium severity level due to its potential for SSRF attacks that can lead to unauthorized information access.
How do I fix CVE-2026-33401?
To mitigate CVE-2026-33401, upgrade Wallos to version 4.7.0 or later, which addresses the incomplete fix from CVE-2026-30840.
What is the impact of CVE-2026-33401?
CVE-2026-33401 can allow attackers to exploit SSRF vulnerabilities to access internal services or sensitive data.
Which versions of Wallos are affected by CVE-2026-33401?
Wallos versions prior to 4.7.0 are affected by CVE-2026-33401.
Is there an exploit publicly available for CVE-2026-33401?
As of now, there are no publicly known exploits specifically targeting CVE-2026-33401.