What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-26 · updated 2026-06-17
• Weakness: CWE-862

Description

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.

Affected products

• hoppscotch: before 2026.2.0 — fixed in 2026.2.0

How to fix

Upgrade to a fixed version: hoppscotch 2026.2.0. Check the vendor advisory for mitigations.

References

• https://github.com/hoppscotch/hoppscotch/releases/tag/2026.2.0
• https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-m5pg-r4jp-qq75

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