Home

Description

Hedera Guardian through 3.5.1 contains an authentication bypass vulnerability in the GET /api/v1/demo/registered-users endpoint that allows unauthenticated attackers to retrieve sensitive user information. Attackers can access the endpoint without providing authentication credentials to obtain usernames, Hedera DIDs, parent registry DIDs, system roles, and policy role assignments for all registered users in the system.

PUBLISHED Reserved 2026-05-11 | Published 2026-05-14 | Updated 2026-05-14 | Assigner VulnCheck




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

Missing Authentication for Critical Function

Product status

Default status
affected

Any version
affected

Credits

Christ Bouchuen finder

References

github.com/hashgraph/guardian/pull/6076 issue-tracking

www.vulncheck.com/...ntication-bypass-information-disclosure third-party-advisory

cve.org (CVE-2026-45248)

nvd.nist.gov (CVE-2026-45248)

Download JSON