CVE-2026-35036
- Source
- https://cve.org/CVERecord?id=CVE-2026-35036
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35036.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-35036
- Aliases
- Published
- 2026-04-06T16:55:47.544Z
- Modified
- 2026-07-08T08:12:57.897608550Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- Ech0 Affected by Unauthenticated Server-Side Request Forgery in Website Preview Feature
- Details
-
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 implementation is unsafe: the route is unauthenticated, accepts a fully attacker-controlled URL, performs a server-side GET, reads the entire response body into memory (io.ReadAll). There is no host allowlist, no SSRF filter, and InsecureSkipVerify: true on the outbound client. Anyone who can reach the instance can force the Ech0 server to open HTTP/HTTPS URLs of their choice as seen from the server’s network position (Docker bridge, VPC, localhost from the process view). This vulnerability is fixed in 4.2.8.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35036.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-918" ] }- References
Affected packages
Git / github.com/lin-snow/ech0
Affected ranges
- Type
- GIT
- Repo
- https://github.com/lin-snow/ech0
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "source": [ "AFFECTED_FIELD", "CPE_RANGE" ], "cpe": "cpe:2.3:a:ech0:ech0:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "4.2.8" } ] }