Medium 4.8Published Jun 18, 2026

CVE-2026-22674Hashgraph Guardian Stored XSS via branding companyName field

Updated under an hour ago (Oct 27, 2026, 10:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for hashgraph guardian

Exploited in the last 30 days

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.

CVSS: 4.8 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

hashgraph guardian hashgraph:guardian (from the name)	through 3.6.0; ba8c566807848cf84360716438056d8d8d2c8362 not affected	CNA record

References

References

https://github.com/hashgraph/guardian/pull/6190	issue-tracking
https://github.com/hashgraph/guardian/commit/ba8c566807848cf84360716438056d8d8d2c8362	patch
https://www.vulncheck.com/advisories/hashgraph-guardian-stored-xss-via-branding-companyname-field	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.