What is CVE-2026-28217?

CVE-2026-28217 is a medium-severity vulnerability in Hoppscotch, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-02-26.

How severe is CVE-2026-28217?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Hoppscotch

CVE-2026-28217

hoppscotch is an open source API development ecosystem. Prior to version 2026.2.0, the `userCollection` GraphQL query accepts an arbitrary collection ID and returns the full collection data — including title, type, and the serialized `data…

Vulnerability class: Broken Access Control

EPSS: 0.000 (4.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Hoppscotch — versions < 2026.2.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-m5pg-r4jp-qq75 (x_refsource_CONFIRM)
https://github.com/hoppscotch/hoppscotch/releases/tag/2026.2.0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-28217?: CVE-2026-28217 is a medium-severity vulnerability in Hoppscotch, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-02-26.
How severe is CVE-2026-28217?: Medium severity. CVSS v3 base score is 6.5 out of 10.