vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-46609

Umbraco.Cms: XSS/HTML Injection in Umbraco Backoffice confirmation dialog

MEDIUM
4.6
CVSS Score
Published: June 10, 2026 at 03:59 PM UTC
Updated: October 26, 2026 at 11:10 AM UTC
1 product affected across 1 vendorUmbraco-CMS

Using Umbraco-CMS by umbraco?

Get instant alerts when new vulnerabilities affect Umbraco-CMS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM4.6
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

Umbraco 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Umbraco-CMS· Umbraco
95%
14.0.0 ≤ v < 17.4.0
Affected range stops below 17.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-vr9v-27gg-qgx4

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.6MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card