CVE-2026-77352Medium· 4.3▾ Sunlit

Wallos is an open-source, self-hostable personal subscription tracker

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score24/ 100 · Low

impact 23.7 · likelihood 0.1 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

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Published

Aug 31, 2026

Updated

Sep 8, 2026

CVSS

4.3

Vendor

—

Product

—

CWE

CWE-918

Depth score

24 · Low

EPSS

0.33% · p26

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS history

Exploit-prediction probability, daily snapshots since Sep 8.

0.2% → 0.3%▲ 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 25 days

Aug 31, 2026Published
Disclosed via NVD
Sep 8, 2026Record revised
Last analysed / modified upstream
Sep 8, 2026EPSS first tracked
0.2%
Sep 25, 2026EPSS peak
0.2% → 0.3%

CWE-918 #nvd

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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