CVE-2026-46609
Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog
Published: Jun 10, 2026Updated: Jun 10, 2026 Sources: CVE List NVD
4.6CVSS
MEDIUMUmbraco is an ASP.NET CMS. From version 14.0.0 to before version 17.4.0, authenticated users are able to inject HTML into an input field, which is rendered in the confirmation dialog without proper output encoding. This issue has been patched in version 17.4.0.
EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:LConfidentialityLow
I:LIntegrityLow
A:NAvailabilityNone
Weaknesses
Affected Products
Umbraco-CMS
umbraco
Attack Graph
Products CVE Techniques Tactics
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Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
MITRE ATT&CK
2 techniques Execution
Initial Access
References
Timeline
Published
Jun 10, 2026
Last Updated
Jun 10, 2026
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