CVE-2026-44478: Hoppscotch

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

hoppscotch is an open source API development ecosystem. The fix for CVE-2026-28215 in version 2026.2.0 addresses the unauthenticated POST /v1/onboarding/config endpoint by checking onboardingCompleted and canReRunOnboarding before allowing config overwrites. However, GET /v1/onboarding/config still leaks all infrastructure secrets in plaintext to unauthenticated users when the ONBOARDING_RECOVERY_TOKEN stored in the database is an empty string. This vulnerability is fixed in 2026.4.0.

Affected products

• Hoppscotch Hoppscotch: from 2025.7.0, before 2026.4.0 (fixed in 2026.4.0)

Published 2026-05-13. Last modified 2026-06-17.