What is CVE-2026-30840?

CVE-2026-30840 is a high-severity vulnerability in Ellite Wallos, classified under Improper Certificate Validation. CVSS score: 8.8/10. Published 2026-03-07.

How severe is CVE-2026-30840?

High severity. CVSS v3 base score is 8.8 out of 10.

SSRF in Ellite Wallos

CVE-2026-30840

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, there is a server-side request forgery vulnerability in notification testers. This issue has been patched in version 4.6.2.

Vulnerability class: Improper Certificate Validation

Published 2026-03-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (43.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Ellite Wallos — versions < 4.6.2
Wallosapp Wallos

Weakness classification (CWE)

References

github.com/ellite/Wallos/security/advisories/GHSA-mr2c-prqv-hqm8 (Exploit, Mitigation, Vendor Advisory)
github.com/ellite/Wallos/commit/e8a513591dbbf885966e2ef55c38622785b9060d (Patch)
github.com/ellite/Wallos/releases/tag/v4.6.2 (Release Notes)

Frequently asked questions

What is CVE-2026-30840?: CVE-2026-30840 is a high-severity vulnerability in Ellite Wallos, classified under Improper Certificate Validation. CVSS score: 8.8/10. Published 2026-03-07.
How severe is CVE-2026-30840?: High severity. CVSS v3 base score is 8.8 out of 10.