PT-2026-50797 · Hashgraph · Guardian

Christ Bouchuen · Published 2026-06-18 · Updated 2026-06-18 · CVE-2026-22674

NVD

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-22674

Affected Products

Guardian

References · 4

• https://github.com/hashgraph/guardian/commit/ba8c566807848cf84360716438056d8d8d2c8362 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-22674 · Security Note
• https://github.com/hashgraph/guardian/pull/6190 · Note
• https://vulncheck.com/advisories/hashgraph-guardian-stored-xss-via-branding-companyname-field · Note