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CVE-2026-22674

Hashgraph Guardian Stored XSS via branding companyName field

Published: Jun 18, 2026Updated: Jul 14, 2026 Sources: CVE List NVDCWE-79
4.8MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 76.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

hashgraph
commercialaka guardian
guardianSaaS
Cloud & SaaS / cloud-platform

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/hashgraph/guardian/pull/6190
github.com
https://github.com/hashgraph/guardian/commit/ba8c566807848cf84360716438056d8d8d2c8362
github.com
https://www.vulncheck.com/advisories/hashgraph-guardian-stored-xss-via-branding-companyname-field
vulncheck.com

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