CVE-2026-77351Wallos: SSRF via Unvalidated User-Level SMTP Host in Email Notification Settings
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 5.0.0, Wallos lets any authenticated user store an arbitrary SMTP host — including private and cloud-metadata IP addresses — in their personal email notification settings, with no server-side SSRF validation. When the scheduled notification cron job runs, it passes the stored host directly to PHPMailer, causing the Wallos server to open an outbound TCP connection to whatever address the attacker specified. This gives a low-privileged attacker a reliable mechanism to probe internal network services from the server's perspective. This issue has been patched in version 5.0.0.
- CVSS
- 3.5 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
ellite Wallos ellite:wallos (from the name) | before 5.0.0 | CNA record |
References
- https://github.com/ellite/Wallos/security/advisories/GHSA-mwqv-gv8x-9jcpx-refsource-confirm
- https://github.com/ellite/Wallos/commit/11eaf402e841a628c68a805694227ce66c45f6f3x-refsource-misc
- https://github.com/ellite/Wallos/releases/tag/v5.0.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.