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Vulnerabilities

Security research · CVE-2025-46736

Umbraco is a free and open source .NET content management system.

Published May 6, 2025 · catalog updated May 6, 2025 · Umbraco-CMS

Check if you run it

No confirmed exploitation is on record for CVE-2025-46736. EPSS is 0.38%. Act only if a listed version of Umbraco-CMS is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.38%
Remediation
Version ranges on file
Affected products
vendor umbraco Umbraco-CMS < 10.8.10

Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor umbraco Umbraco-CMS < 10.8.10< 10.8.10

How to fix CVE-2025-46736

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-46736. EPSS is 0.38%. Act only if a listed version of Umbraco-CMS is installed.

Which versions are affected?

Compare what you have installed with umbraco Umbraco-CMS < 10.8.10 < 10.8.10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.38%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 6, 2025 · EUVD

    Detected

    Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.

  2. May 6, 2025 · EUVD

    Updated

    Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.

Sources

  • CVE.orgVulnerability recordCVE-2025-46736

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-46736

    30-day exploitation probability 0.4%

    first.org
  • EUVDVulnerability recordEUVD-2025-13623

    Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No kn

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.