SSRF in Ellite Wallos
CVE-2026-33399
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, the SSRF fix applied in version 4.6.2 for CVE-2026-30839 and CVE-2026-30840 is incomplete. The validate_webhook_url_for_ssrf() protection was added to the test* notification endpoints but not to the corresponding save* endpoints. An authenticated user can save an internal/private IP address as a notification URL, and when the cron job sendnotifications.php executes, the request is sent to the internal IP without any SSRF validation. This issue has been patched in version 4.7.0.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Ellite Wallos — versions < 4.7.0
- Wallosapp Wallos
Weakness classification (CWE)
References
- github.com/ellite/Wallos/security/advisories/GHSA-mfjc-3258-cq3j (Exploit, Vendor Advisory)
- github.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecef (Patch)
Frequently asked questions
- What is CVE-2026-33399?
- CVE-2026-33399 is a high-severity vulnerability in Ellite Wallos, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.7/10. Published 2026-03-24.
- How severe is CVE-2026-33399?
- High severity. CVSS v3 base score is 7.7 out of 10.