CVE-2026-28217 MEDIUM

CVE-2026-28217: IDOR in GraphQL userCollection Query Exposes Other Users' Private Collections

Vendor Hoppscotch
Product hoppscotch
Weakness CWE-862 · Missing authorization
Published February 26, 2026
Last update February 27, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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` field containing HTTP requests with headers and potentially secrets — to any authenticated user, without verifying that the requesting user owns the collection. This is an Insecure Direct Object Reference (IDOR) caused by a missing authorization check that exists on every other operation in the same resolver. Version 2026.2.0 fixes the issue.

Key dates

02Disclosure timeline

February 26, 2026 CVE published
February 27, 2026 Record updated

Related vulnerabilities

04Related CVE