Vulnerability · Published Aug 18, 2026 · Assigned by GitHub_M

CVE-2026-69189Hoppscotch: Cross-user private data exposure and UserHistory IDOR via team GraphQL resolvers

High 7.6

In plain English

A high-severity information exposure 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 34% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.4%top 66.2% 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 2026.6.0, the team, teamMembers.user, RESTHistory, GQLHistory, currentRESTSession, currentGQLSession, environments, globalEnvironments, and settings GraphQL paths expose another workspace member's private User data, while toggleHistoryStarStatus and removeRequestFromHistory in the UserHistory service accept another user's history identifier without enforcing userUid ownership, allowing an authenticated workspace member to read private request history, session data, request contents, authorization headers, environment values, and settings and to modify or delete the victim's private history entries. This issue is fixed in version 2026.6.0.

Affected products (as reported)

Vendor	Product	Versions
hoppscotch	hoppscotch	< 2026.6.0

Weakness: CWE-200, CWE-639, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

References

https://github.com/hoppscotch/hoppscotch/security/advisories/GHSA-p25p-g9jp-7q46 x_refsource_CONFIRM
https://github.com/hoppscotch/hoppscotch/pull/6409 x_refsource_MISC
https://github.com/hoppscotch/hoppscotch/commit/9cc980bc4feb1f8e139b23b9de0beed0db72d4b7 x_refsource_MISC
https://github.com/hoppscotch/hoppscotch/releases/tag/2026.6.0 x_refsource_MISC