What is CVE-2026-35036?

CVE-2026-35036 is a high-severity vulnerability in Lin-snow Ech0, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-04-06.

How severe is CVE-2026-35036?

High severity. CVSS v3 base score is 7.5 out of 10.

SSRF in Lin-snow Ech0

CVE-2026-35036

Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to 4.2.8, Ech0 implements link preview (editor fetches a page title) through GET /api/website/title. That is legitimate product behavior, but the impl…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.001 (20.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Lin-snow Ech0 — versions < 4.2.8

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

https://github.com/lin-snow/Ech0/security/advisories/GHSA-wc4h-2348-jc3p (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-35036?: CVE-2026-35036 is a high-severity vulnerability in Lin-snow Ech0, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-04-06.
How severe is CVE-2026-35036?: High severity. CVSS v3 base score is 7.5 out of 10.