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CVE-2026-50160

Hoppscotch vulnerability

10.0 CRITICALPublic exploitEPSS 1.70%
  1. Published1 Jul 2026

Description

Hoppscotch is an API development ecosystem. In self-hosted deployments of hoppscotch-backend from version 2026.4.1 and earlier, the unauthenticated POST /v1/onboarding/config endpoint is vulnerable to mass assignment. The global NestJS ValidationPipe is configured without whitelist: true, so extra properties on the request body that are not declared in SaveOnboardingConfigRequest are not stripped and are iterated in the service layer as if they were legitimate InfraConfig entries. Because keys such as JWT_SECRET and SESSION_SECRET are valid InfraConfigEnum values and are not explicitly rejected during validation, an unauthenticated attacker who can reach a fresh instance before onboarding completes (or when no users exist) can overwrite these values in the database. Overwriting JWT_SECRET gives the attacker control of the JWT signing key, allowing them to forge tokens for any user, including administrators, and results in full server compromise. The issue is fixed in hoppscotch 2026.5.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Affected products

Hoppscotch< 2026.5.0

Remediation

Fixed in
Hoppscotch≥ 2026.5.0

References

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Frequently asked

Is CVE-2026-50160 being actively exploited?

CVE-2026-50160 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.70%.

How severe is CVE-2026-50160?

CVE-2026-50160 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 1.70% probability of exploitation.

Which products are affected by CVE-2026-50160?

Affected products include Hoppscotch.

How do I fix CVE-2026-50160?

Upgrade affected software to a fixed version, for example Hoppscotch 2026.5.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.