PatchTheCVECVE-2026-50160: Hoppscotch is an API development ecosystem
CVE-2026-50160 is a critical-severity flaw (CVSS 10.0) affecting hoppscotch. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 w
Why this priority
- Critical severity
- Public exploit reference
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 10.0 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.7% (top 23%) |
| CISA exploited list | No |
| Weakness | CWE-915 |
| Published | 2026-07-01 |
| Last modified | 2026-07-02 |
Last updated 2026-07-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- Write-up: github.com/hoppscotch/hoppscotch/security/advisories/GHSA-j542-4rch-8hwf
- Nuclei scan template: Hoppscotch <= 2026.4.1 - Mass Assignment JWT_SECRET Overwrite
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-50160?
hoppscotch: upgrade to 2026.5.0. Exact commands for each OS are on this page.
Is CVE-2026-50160 being exploited?
CVE-2026-50160 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-50160 affect?
CVE-2026-50160 affects hoppscotch. Severity is critical (CVSS 10.0). 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 Vali
How urgent is CVE-2026-50160?
Priority 67/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action