CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
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Description
hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, the /enter page contains a DOM-based open redirect vulnerability. The redirect query parameter is directly used to construct a URL and redirect the user without proper validation. This issue has been patched in version 2026.3.0.
Analysis
Hoppscotch prior to version 2026.3.0 contains a DOM-based open redirect vulnerability in the /enter page that allows unauthenticated remote attackers to redirect users to arbitrary external URLs through an unvalidated redirect query parameter. The vulnerability requires user interaction (clicking a malicious link) and has limited impact (integrity only), but poses a real phishing risk. …
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External POC / Exploit Code
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EUVD-2026-18534