{"id":"CVE-2026-35037","revision":"45dd2355d602464699a1d57a25db65f0","records":[{"revision":"45dd2355d602464699a1d57a25db65f0","observedAt":"2026-10-25T08:17:35.884+00:00","statement":{"source":"nvd","id":"CVE-2026-35037","aliases":[],"title":"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 w…","description":"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.","state":0,"publishedAt":"2026-04-06T17:17:13.093+00:00","modifiedAt":"2026-10-24T13:10:00.147+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","score":7.2,"severity":"HIGH"}],"references":["https://github.com/lin-snow/Ech0/security/advisories/GHSA-cqgf-f4x7-g6wc"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-35037","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-918"],"productCriteria":["cpe:2.3:a:ech0:ech0:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-04-06T17:17:13.093","lastModified":"2026-10-24T13:10:00.147"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-35037","identifiers":["CVE-2026-35037"]},"retained":false,"historicalAffected":[]}],"coverage":[]}