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OpenAdvisories
High · 8.5 CVE-2026-34931 EUVD-2026-18538

hoppscotch: Improper loopback redirect_uri validation in device-login flow

Published Apr 2, 2026 · Updated Apr 6, 2026 · Assigned by GitHub_M

Description

hoppscotch is an open source API development ecosystem. Prior to version 2026.3.0, there is an open redirect vulnerability that leads to token exfiltration. With these tokens, the attacker can sign in as the victim to takeover their account. This issue has been patched in version 2026.3.0.

Affected products

VendorProductAffectedFixed
hoppscotch hoppscotch < 2026.3.0 —

References