EUVD-2026-18534Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
5DescriptionNVD
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.
AnalysisAI
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. Vendor-released patch available in version 2026.3.0.
Technical ContextAI
The vulnerability is a DOM-based open redirect (CWE-601) where user-supplied input from the redirect query parameter is directly used to construct a URL redirect without validation. This occurs in client-side JavaScript code rather than server-side logic. The affected product is Hoppscotch (cpe:2.3:a:hoppscotch:hoppscotch:*:*:*:*:*:*:*:*), an open source API development ecosystem. Open redirects are particularly dangerous in authentication and callback contexts, as they can be chained with social engineering to deceive users into following legitimate-looking URLs that actually redirect to attacker-controlled phishing pages. The /enter page context suggests this may be part of an authentication or user onboarding flow, increasing the potential for credential harvesting attacks.
RemediationAI
Vendor-released patch: Upgrade to Hoppscotch version 2026.3.0 or later, which contains the fix for the redirect query parameter validation. Users should update their Hoppscotch installations via the official GitHub releases repository (https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0). No workaround is documented; patching is the recommended remediation. Organizations deploying Hoppscotch should prioritize this update as part of routine security maintenance, particularly if the /enter page is exposed to untrusted users.
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