CVE-2026-34847: hoppscotch: Open redirect via `/enter?redirect=`

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-04-02 · updated 2026-07-24
Weakness: CWE-601

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.

Affected products

hoppscotch: before 2026.3.0 — fixed in 2026.3.0

How to fix

Upgrade to a fixed version: hoppscotch 2026.3.0. Check the vendor advisory for mitigations.

References

https://github.com/hoppscotch/hoppscotch/releases/tag/2026.3.0
https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-27pm-c9ch-746q

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