Wallos: Authenticated SSRF via per-user SMTP notification host (low-privilege user)
Published Aug 31, 2026
4.3
MEDIUMCVSS 3.1
EPSS 0.33%
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.
Affected products
-
Affected
- ≥ 2.0.0, < 5.0.0
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (4)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-68889 Advisory
- https://github.com/ellite/Wallos/commit/11eaf402e841a628c68a805694227ce66c45f6f3 x_refsource_MISC
- https://github.com/ellite/Wallos/releases/tag/v5.0.0 x_refsource_MISC
- https://github.com/ellite/Wallos/security/advisories/GHSA-c75x-9vj6-57qj x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-68889 | Advisory | |
| https://github.com/ellite/Wallos/commit/11eaf402e841a628c68a805694227ce66c45f6f3 | x_refsource_MISC | |
| https://github.com/ellite/Wallos/releases/tag/v5.0.0 | x_refsource_MISC | |
| https://github.com/ellite/Wallos/security/advisories/GHSA-c75x-9vj6-57qj | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
Red Hat
No data
GitHub
No data