CVE-2023-49273 is a medium-severity incorrect authorization vulnerability in Umbraco.CMS (nuget), affecting versions >= 8.0.0, < 8.18.10. It is fixed in 8.18.10, 10.8.1, 12.3.4.
Impact Users with low privileges ( Editor, etc) are able to access some unintended endpoints. Explanation of the vulnerability Possible to delete redirect urls, when disabled by admin with only access to backoffice Possible to access the examine dashboard with only access to backoffice Possible to access the published cache dashboard with only access to backoffice Possible to access the telemetry dashboard with only access to backoffice Possible to access the languages with only access to backoffice Possible to access the stylesheets with only access to backoffice
The application does not correctly enforce access controls, allowing a principal to access resources or operations beyond their granted permissions. Typical impact: unauthorized data access or execution of privileged operations.
CVE-2023-49273 has a CVSS score of 5.4 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (8.18.10, 10.8.1, 12.3.4). Upgrading removes the vulnerable code path.
nuget
Umbraco.CMS (>= 8.0.0, < 8.18.10)Umbraco.CMS (>= 9.0.0, < 10.8.1)Umbraco.CMS (>= 11.0.0, < 12.3.4)Umbraco.CMS → 8.18.10 (nuget)Umbraco.CMS → 10.8.1 (nuget)Umbraco.CMS → 12.3.4 (nuget)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.
Kodem's runtime-powered SCA identifies whether CVE-2023-49273 is reachable in your applications. Explore open-source security for your team.
See if CVE-2023-49273 is reachable in your applications. Get a demo
Upgrade the following packages to resolve this vulnerability:
Umbraco.CMS to 8.18.10 or laterUmbraco.CMS to 10.8.1 or laterUmbraco.CMS to 12.3.4 or laterKodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
CVE-2023-49273 is a medium-severity incorrect authorization vulnerability in Umbraco.CMS (nuget), affecting versions >= 8.0.0, < 8.18.10. It is fixed in 8.18.10, 10.8.1, 12.3.4. The application does not correctly enforce access controls, allowing a principal to access resources or operations beyond their granted permissions.
CVE-2023-49273 has a CVSS score of 5.4 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Umbraco.CMS (nuget) versions >= 8.0.0, < 8.18.10 is affected.
Yes. CVE-2023-49273 is fixed in 8.18.10, 10.8.1, 12.3.4. Upgrade to this version or later.
Whether CVE-2023-49273 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Umbraco.CMS to 8.18.10 or laterUmbraco.CMS to 10.8.1 or laterUmbraco.CMS to 12.3.4 or later