Vulnerability Description
Wallos is an open-source, self-hostable personal subscription tracker. From version 2.0.0 to before version 5.0.0, any authenticated Wallos user (no admin rights required) can make the server open arbitrary outbound SMTP connections to internal/link-local addresses, by setting the SMTP host of their personal email notifications to an internal IP. The per-user notification settings endpoint (endpoints/notifications/saveemailnotifications.php) performs no SSRF validation, and the notification cron (endpoints/cronjobs/sendnotifications.php) feeds that user-controlled host straight into PHPMailer ($mail->Host = $email['smtpAddress']). When the user's subscription notification fires, the server connects to the chosen host:port. This issue has been patched in version 5.0.0.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/ellite/Wallos/commit/11eaf402e841a628c68a805694227ce66c45f6f3
- https://github.com/ellite/Wallos/releases/tag/v5.0.0
- https://github.com/ellite/Wallos/security/advisories/GHSA-c75x-9vj6-57qj
FAQ
What is CVE-2026-77352?
CVE-2026-77352 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Wallos is an open-source, self-hostable personal subscription tracker. From version 2.0.0 to before version 5.0.0, any authenticated Wallos user (no admin rights required) can make the server open arb...
How severe is CVE-2026-77352?
CVE-2026-77352 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-77352?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.