Vulnerability · Published Feb 26, 2026 · Assigned by GitHub_M

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

Medium 6.5

In plain English

A medium-severity missing authorization in hoppscotch from hoppscotch. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.4%top 64.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
hoppscotch	hoppscotch	< 2026.2.0

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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