CVE-2026-22674 Details
Description
Hashgraph Guardian through 3.6.0, 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.
A stored cross-site scripting vulnerability has been identified in Hashgraph Guardian versions through 3.5.0. This issue allows authenticated users with the STANDARD_REGISTRY role to inject malicious scripts by submitting a crafted companyName value via the branding configuration API endpoint. The vulnerability arises from unsanitized innerHTML assignments in the branding service, enabling the execution of arbitrary JavaScript in the browsers of all authenticated users with each page load.
Users can update to Hashgraph Guardian version 3.6.0 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 18, 2026CISA-ADP
Assessed Jun 22, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/hashgraph/guardian/commit/ba8c566807848cf84360716438056d8d8d2c8362 | [email protected] | Source CodeVendor |
| https://github.com/hashgraph/guardian/pull/6190 | [email protected] | Issue TrackingVendor |
| https://www.vulncheck.com/advisories/hashgraph-guardian-stored-xss-via-branding-companyname-field | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Hashgraph Guardian | <= 3.5.0 (semver) |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | CVE Modified | [email protected] |
| Jun 23, 2026 | CVE Modified | [email protected] |
| Jun 22, 2026 | CVE Modified | CISA-ADP |
| Jun 18, 2026 | New CVE Received | [email protected] |