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Vulnerability Database · NuGet · Package report

UmbracoCms: vulnerability history, versions and safety

UmbracoCms is a package in the NuGet ecosystem. Vulert records 6 vulnerabilities for it across 120 releases, from Apr 2021 to Jan 2026. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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6 vulnerabilities recorded M5 L1
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1 with no fix published

No patched version yet — these are the ones to plan around.

See the unfixed vulnerabilities →
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1 in the last 12 months

Most recent disclosure 15 Jan 2026.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all UmbracoCms vulnerabilities

Vulert verdict on UmbracoCms 8.18.15 i

Updated on 23 Oct 2026

Careful: 8.18.15 has 1 known vulnerability, and 1 has no fix yet. Use an earlier safe version, or the workaround listed for each one.

Package health score 60/100
  • Security Minor issues
  • Maintenance Maintaining
  • Popularity Key ecosystem project
  • Community Moderate

The current release has a vulnerability with no published fix, which caps this score.

What to do: Pin an earlier, unaffected release if you can, and apply the workaround each vulnerability lists until a fix is published. No fix yet: Vulert alerts you the moment one is published. Monitor it with Vulert →

  • Current release 8.18.15 — affected i
  • Vulnerabilities on record 6 over 4 years · 1 in the last year i
  • Latest disclosure 15 Jan 2026 i
  • Highest CVSS 6.5 i
  • With no published fix 1 i
  • Stars 5,268 i
  • OpenSSF scorecard 5/10 i
  • Last release 24 months ago i
  • Licence non-standard i

Version list, release dates, licence and dependants published by NuGet, refreshed 23 Oct 2026. Licence information is not legal advice.

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01 Versions

Which versions are affected

Every version Vulert tracks for UmbracoCms, newest first, with the vulnerabilities recorded against each one. A version showing none has no vulnerability in the Vulert database — open it for the full picture on that release.

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Version Released Vulert vulnerabilities Licence Fix published Details
8.18.15 22 Oct 2024 M1 non-standard No Details →
8.18.14 21 May 2024 M1 non-standard Yes Details →
8.18.13 08 Feb 2024 M1 non-standard Yes Details →
8.18.12 20 Dec 2023 M1 non-standard Yes Details →
8.18.11 12 Dec 2023 M1 non-standard Yes Details →
8.18.10 12 Dec 2023 M1 non-standard Yes Details →
7.15.11 05 Sep 2023 M4 non-standard No Details →
8.18.9 28 Aug 2023 M1 non-standard Yes Details →
8.18.8 03 May 2023 M1 non-standard Yes Details →
8.18.7 28 Mar 2023 M1 non-standard Yes Details →
8.18.6 21 Mar 2023 M1 non-standard Yes Details →
7.15.10 13 Oct 2022 M3 non-standard Yes Details →
7.15.9 13 Sep 2022 M3 non-standard Yes Details →
7.15.8 17 Aug 2022 M3 non-standard Yes Details →
8.18.5 16 Aug 2022 M1 non-standard Yes Details →
8.18.4 17 May 2022 M1 non-standard Yes Details →
8.18.3 05 Apr 2022 M1 non-standard Yes Details →
8.18.2 29 Mar 2022 M1 non-standard Yes Details →
8.18.1 23 Mar 2022 M1 non-standard Yes Details →
8.18.0 24 Feb 2022 M1 non-standard Yes Details →
8.18.0-rc2 17 Feb 2022 M1 non-standard Yes Details →
8.18.0-rc 01 Feb 2022 M1 non-standard Yes Details →
8.17.2 01 Feb 2022 M1 non-standard Yes Details →
8.17.1 09 Nov 2021 M1 non-standard Yes Details →
8.17.0 07 Oct 2021 M1 non-standard Yes Details →
8.17.0-rc2 23 Sep 2021 M1 non-standard Yes Details →
8.17.0-rc 09 Sep 2021 M1 non-standard Yes Details →
8.15.3 31 Aug 2021 M1 non-standard Yes Details →
8.14.4 31 Aug 2021 M1 non-standard Yes Details →
8.16.0 26 Aug 2021 M1 non-standard Yes Details →
8.15.2 17 Aug 2021 M1 non-standard Yes Details →
8.14.3 17 Aug 2021 M1 non-standard Yes Details →
8.16.0-rc 12 Aug 2021 M1 non-standard Yes Details →
8.14.2 27 Jul 2021 M1 non-standard Yes Details →
8.15.1 27 Jul 2021 M1 non-standard Yes Details →
8.15.0 15 Jul 2021 M1 non-standard Yes Details →
8.15.0-rc 01 Jul 2021 M1 non-standard Yes Details →
8.14.1 30 Jun 2021 M2 non-standard No Details →
8.14.0 03 Jun 2021 M1 non-standard Yes Details →
8.11.3 01 Jun 2021 M1 non-standard Yes Details →
8.12.3 01 Jun 2021 M1 non-standard Yes Details →
8.13.1 01 Jun 2021 M1 non-standard Yes Details →
8.14.0-rc 20 May 2021 M1 non-standard Yes Details →
8.13.0 22 Apr 2021 M1 non-standard Yes Details →
8.13.0-rc 08 Apr 2021 M1 non-standard Yes Details →
8.12.2 23 Mar 2021 M1 non-standard Yes Details →
8.9.3 16 Mar 2021 M2 non-standard Yes Details →
8.10.3 16 Mar 2021 M1 non-standard Yes Details →
8.6.8 16 Mar 2021 M3 non-standard Yes Details →
8.7.3 16 Mar 2021 M3 non-standard Yes Details →
8.12.1 16 Mar 2021 M1 non-standard Yes Details →
8.11.2 16 Mar 2021 M1 non-standard Yes Details →
8.8.4 16 Mar 2021 M3 non-standard Yes Details →
8.12.0 11 Mar 2021 M1 non-standard Yes Details →
8.12.0-rc 25 Feb 2021 M1 non-standard Yes Details →
7.15.7 09 Feb 2021 M3 non-standard Yes Details →
8.11.1 28 Jan 2021 M1 non-standard Yes Details →
8.11.0 28 Jan 2021 M1 non-standard Yes Details →
8.10.2 26 Jan 2021 M1 non-standard Yes Details →
8.8.3 26 Jan 2021 M3 non-standard Yes Details →
8.9.2 26 Jan 2021 M2 non-standard Yes Details →
8.7.2 26 Jan 2021 M3 non-standard Yes Details →
8.6.7 26 Jan 2021 M3 non-standard Yes Details →
8.11.0-rc 14 Jan 2021 M1 non-standard Yes Details →
8.10.1 05 Jan 2021 M1 non-standard Yes Details →
8.10.0 28 Dec 2020 M1 non-standard Yes Details →
8.10.0-rc 03 Dec 2020 M2 non-standard Yes Details →
8.9.1 10 Nov 2020 M3 non-standard Yes Details →
8.6.6 10 Nov 2020 M3 non-standard Yes Details →
8.8.2 10 Nov 2020 M3 non-standard Yes Details →
8.7.1 10 Nov 2020 M3 non-standard Yes Details →
8.8.1 27 Oct 2020 M3 non-standard Yes Details →
8.9.0 26 Oct 2020 M3 non-standard Yes Details →
8.9.0-rc 05 Oct 2020 M3 non-standard Yes Details →
8.8.0 01 Oct 2020 M3 non-standard Yes Details →
8.6.5 29 Sep 2020 M3 non-standard Yes Details →
8.8.0-rc 17 Sep 2020 M3 non-standard Yes Details →
8.7.0 10 Sep 2020 M3 non-standard Yes Details →
7.15.6 25 Aug 2020 M3 non-standard Yes Details →
8.7.0-rc 20 Aug 2020 M3 non-standard Yes Details →
8.6.4 11 Aug 2020 M3 non-standard Yes Details →
8.6.3 23 Jun 2020 M3 non-standard Yes Details →
8.6.2 02 Jun 2020 M3 non-standard Yes Details →
7.15.5 12 May 2020 M3 non-standard Yes Details →
8.6.1 21 Apr 2020 M3 non-standard Yes Details →
8.6.0 31 Mar 2020 M3 non-standard Yes Details →
7.15.4 17 Mar 2020 M3 non-standard Yes Details →
8.5.5 17 Mar 2020 M3 non-standard Yes Details →
8.3.1 25 Feb 2020 M4 non-standard Yes Details →
8.4.2 25 Feb 2020 M4 non-standard Yes Details →
8.5.4 25 Feb 2020 M3 non-standard Yes Details →
8.2.3 25 Feb 2020 M4 non-standard Yes Details →
8.0.3 25 Feb 2020 M4 non-standard Yes Details →
8.1.6 25 Feb 2020 M4 non-standard Yes Details →
8.6.0-rc 20 Feb 2020 M3 non-standard Yes Details →
8.5.3 28 Jan 2020 M4 non-standard Yes Details →
8.5.2 21 Jan 2020 M4 non-standard Yes Details →
8.5.1 15 Jan 2020 M4 non-standard Yes Details →
8.4.1 14 Jan 2020 M4 non-standard Yes Details →
8.4.0 10 Dec 2019 M4 non-standard Yes Details →
7.14.1 10 Dec 2019 M3 — Yes Details →
7.13.3 10 Dec 2019 M3 — Yes Details →
7.12.5 10 Dec 2019 M3 — Yes Details →
7.11.3 10 Dec 2019 M3 — Yes Details →
7.10.6 10 Dec 2019 M3 — Yes Details →
7.9.7 10 Dec 2019 M3 — Yes Details →
7.8.4 10 Dec 2019 M3 — Yes Details →
7.7.14 10 Dec 2019 M3 — Yes Details →
7.6.14 10 Dec 2019 M3 — Yes Details →
7.5.15 10 Dec 2019 M3 — Yes Details →
7.4.4 10 Dec 2019 M3 — Yes Details →
7.3.9 10 Dec 2019 M3 — Yes Details →
7.2.9 10 Dec 2019 M3 — Yes Details →
7.1.10 10 Dec 2019 M3 — Yes Details →
8.4.0-rc 26 Nov 2019 M4 — Yes Details →
8.2.2 05 Nov 2019 M4 — Yes Details →
8.3.0 05 Nov 2019 M4 — Yes Details →
8.2.1 29 Oct 2019 M4 — Yes Details →
8.2.0 15 Oct 2019 M4 — Yes Details →
8.2.0-rc 30 Sep 2019 M4 — Yes Details →

The newest 120 of 321 versions Vulert tracks. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2021 3
  • 2024 2
  • 2026 1

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 1 of the 6 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for UmbracoCms

The 5 most severe of 6 vulnerabilities recorded for this package

Search all 6 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2020-5811: Authenticated Path Traversal in Umbraco CMS 6.5 medium 8.9.2 13 Apr 2021
CVE-2020-9472: Unrestricted Upload of File with Dangerous Type in Umbraco CMS 6.5 medium 8.5.4 02 Aug 2021
CVE-2021-47776: Umbraco CMS Server-Side Request Forgery Vulnerability 5.3 medium No fix published 15 Jan 2026
CVE-2024-48927: UmbracoCms and Umbraco.Cms Potential Code Execution Risk in SVG File Preview 4.6 medium 8.18.15 22 Oct 2024
CVE-2020-29454: Incorrect permission enforcement in UmbracoCms 4.3 medium 8.10.0 13 Apr 2021

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

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Questions

About UmbracoCms

Is UmbracoCms safe to use?

Vulert records 6 vulnerabilities for UmbracoCms in NuGet: 0 critical, 0 high, 5 medium and 1 low. 1 of them has no published fix yet, so that is the one to avoid or mitigate.

What is UmbracoCms's Vulert package health score?

Vulert scores UmbracoCms 60/100, which reads as usable, but worth attention. The score weighs the vulnerability record (40), maintenance and release cadence (25), adoption from dependents and stars (20) and community signals such as the OpenSSF scorecard and forks (15). The current release has a vulnerability with no published fix, which caps this score.

Is the latest version of UmbracoCms affected?

Yes. 8.18.15, the version you would install today, has 1 known vulnerability, and 1 has no published fix yet. Use an earlier unaffected release, or the workaround each vulnerability lists.

Which version of UmbracoCms should I use?

8.18.15 is the version Vulert recommends for the affected releases. The version table above lists every release with the vulnerabilities recorded against it, so you can confirm the range you actually run.

How many vulnerabilities does UmbracoCms have?

6 vulnerabilities are recorded for UmbracoCms in the NuGet ecosystem: 0 critical, 0 high, 5 medium and 1 low. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new UmbracoCms vulnerabilities disclosed?

1 vulnerability was recorded for UmbracoCms in the last 12 months, and the oldest entry in this database dates to 13 Apr 2021. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of UmbracoCms are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor UmbracoCms for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the UmbracoCms version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.