HOMEVULNERABILITIESCVE-2026-45248
MEDIUM

CVE-2026-45248

CWE-306Published: May 14, 2026· Updated: May 15, 2026

5.3
CVSS v3.1
EPSS:0.08%probability of exploitation in 30 daysPercentile:24.1th

Official 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.

NVD Source

Technical Analysis

CVE-2026-45248 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (2)

→
https://github.com/hashgraph/guardian/pull/6076
→
https://www.vulncheck.com/advisories/hedera-guardian-authentication-bypass-information-disclosure

Quick Facts

CVE IDCVE-2026-45248
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-306
CISA KEVNo
EPSS (30d)0.08%
PublishedMay 14, 2026

Related CVEs (CWE-306)

CVE-2026-54309
10.0
CVE-2026-20223
10.0
CVE-2026-44329
10.0
CVE-2026-34162
10.0
CVE-2026-49257
10.0
CVE-2026-46803
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-45248 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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