CVE-2026-46609

Description

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

Overview

State

—

Assigner (CNA)

—

CVSS severity

medium

CVSS score

4.6 / 10

CVSS vector

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

Effective score

4.6 / 10 MEDIUM source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-46609

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-36070

Assigner

GitHub_M

Published

Jun 10, 2026, 3:59:03 PM

Updated

Jun 10, 2026, 6:08:11 PM

EUVD base score (CVSS 3.1)

4.6 / 10
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

EUVD-reported EPSS

0.1400

Vendors

umbraco

Products

Umbraco-CMS (14.0.0, < 17.4.0)

Aliases

GHSA-vr9v-27gg-qgx4

ENISA 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.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

Web references (2)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2026-46609 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-46609 tenable:www.cve.org

• April 2026 Critical Patch Update Released | security - Oracle Blogs
  web:blogs.oracle.com

  For more information about the Critical Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

  2026-05-26 03:08 UTC
• CISA Warns of Exploited Microsoft Defender 0-Day Flaws
  web:cyberpress.org

  The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added two actively exploited Microsoft Defender vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, issuing an urgent remediation directive for federal agencies with a due date of June 3, 2026 .

  2026-05-26 03:08 UTC
• Microsoft Issues Second Biggest Patch Tuesday Ever in April
  web:redmondmag.com

  Microsoft April 2026 Patch Tuesday fixed 163 CVEs , marking its second-largest security update. Three zero-day vulnerabilities impacted SharePoint, Chromium-based Edge workflows and Microsoft Defender.

  2026-05-26 03:08 UTC
• KB4073119: Windows client guidance for IT Pros to protect against ...
  web:support.microsoft.com

  Provides Windows client guidance for IT Pros to protect against speculative execution side-channel vulnerabilities.

  2026-05-26 03:08 UTC
• Landing Page | ServiceNow Common Vulnerabilities & Exposures (CVE ...
  web:support.servicenow.com

  Overview The advisories below document publicly disclosed Common Vulnerabilities and Exposures ( CVEs ) in the Now Platform by ServiceNow. Because ServiceNow uses various methods to communicate vulnerability information, patches, and other fixes, customers should review family, security patch , and hotfix release notes, which are available at https://docs.servicenow.com, for a complete list of ...

  2026-05-26 03:08 UTC
• Microsoft April 2026 Patch Tuesday fixes 167 flaws, 2 zero-days
  web:www.bleepingcomputer.com

  Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.

  2026-05-26 03:08 UTC
• April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike
  web:www.crowdstrike.com

  Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

  2026-05-26 03:08 UTC
• Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation
  web:www.forbes.com

  Updated May 17: This article, originally published May 16, has been updated to include further details on the emergency mitigation process recommended after the CVE - 2026 -42897 Microsoft Exchange ...

  2026-05-26 03:08 UTC
• Security Update Guide FAQs - microsoft.com
  web:www.microsoft.com

  These Knowledge Base articles accompany all security updates and advisories, and include caveats or known issues with security updates. Additionally, support engineers document common concerns from customers in these KB articles. These Knowledge Base articles are published the Security Update Guide with each release on Patch Tuesday.

  2026-05-26 03:08 UTC
• Oracle Critical Patch Update Advisory - April 2026
  web:www.oracle.com

  This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

  2026-05-26 03:08 UTC

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