CVE-2026-35037: Ech0 affected by unauthenticated SSRF in GetWebsiteTitle allows access to internal services and cloud metadata
lin-snow · Ech0
Affected: lin-snow Ech0 · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 50% of scored CVEs
DescriptionCVE.org
Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to 4.2.8, the GET /api/website/title endpoint accepts an arbitrary URL via the website_url query parameter and makes a server-side HTTP request to it without any validation of the target host or IP address. The endpoint requires no authentication. An attacker can use this to reach internal network services, cloud metadata endpoints (169.254.169.254), and localhost-bound services, with partial response data exfiltrated via the HTML <title> tag extraction This vulnerability is fixed in 4.2.8.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- lin-snow · Ech0< 4.2.8
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- Ech0 < 4.2.8 - Server-Side Request Forgery · nuclei template in projectdiscovery/nuclei-templates
- Weakness
- Server-Side Request Forgery
- Vendor
- lin-snow
- Published
- April 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-35037 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.