Is CVE-2026-35037 actively exploited?

No active exploitation of CVE-2026-35037 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-35037 be exploited remotely?

Yes. CVE-2026-35037 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-35037?

CVE-2026-35037 has a CVSS score of 7.2 (HIGH).

HOME VULNERABILITIESCVE-2026-35037

HIGH

CVE-2026-35037

CWE-918Published: April 6, 2026· Updated: Apr 7, 2026

7.2

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-35037 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.