CVE-2026-22674
Hashgraph Guardian Stored XSS via branding companyName field
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
0th
Hashgraph Guardian through 3.5.0, fixed in commit ba8c566, contains a stored cross-site scripting vulnerability that allows authenticated users with the STANDARD_REGISTRY role to inject malicious scripts by submitting a crafted companyName value via the branding configuration API endpoint. Attackers can exploit the unsanitized innerHTML assignment in the branding service to execute arbitrary JavaScript in the browser of every authenticated user on every page load.
| CWE | CWE-79 |
| Vendor | hashgraph |
| Product | guardian |
| Published | Jun 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
hashgraph / guardian
0 ≤ 3.6.0
References
Credits
Christ Bouchuen