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TI-2026-33055 Aliases CVE-2026-45248GHSA-5v4v-3g9q-mh5j

Hedera Guardian Authentication Bypass Information Disclosure

Priority LOW 36CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00356 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
hashgraphguardianup to 3.5.1—No fix listedCNA
  • guardian Vendorhashgraph Affected up to 3.5.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hedera:guardian:*:*:*:*:*:*:*:*up to 3.5.1VulnerableHedera
  • cpe:2.3:a:hedera:guardian:*:*:*:*:*:*:*:* Versions up to 3.5.1 Vulnerable ·Hedera

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45248
  2. 2026-10-03 Alias added: GHSA-5v4v-3g9q-mh5j

References

Patch 1

  • TI-2026-18202 Hashgraph Guardian Stored XSS via branding companyName field CVSS 4.0MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences