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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Fri, 23 Oct 2026 23:22:36 +0000</lastBuildDate>
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      <title>CVE-2023-25657 — Remote code execution in Jinja2 template rendering in Nautobot</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2023-25657</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nautobot&lt;/p&gt;
&lt;p&gt;Nautobot is a Network Source of Truth and Network Automation Platform. All users of Nautobot versions earlier than 1.5.7 are impacted by a remote code execution vulnerability. Nautobot did not properly sandbox Jinja2 template rendering. In Nautobot 1.5.7 has enabled sandboxed environments for the Jinja2 template engine used internally for template rendering for the following objects: `extras.ComputedField`, `extras.CustomLink`, `extras.ExportTemplate`, `extras.Secret`, `extras.Webhook`. While no active exploits of this vulnerability are known this change has been made as a preventative measure to protect against any potential remote code execution attacks utilizing maliciously crafted template code. This change forces the Jinja2 template engine to use a `SandboxedEnvironment` on all new installations of Nautobot. This addresses any potential unsafe code execution everywhere the helper function `nautobot.utilities.utils.render_jinja2` is called. Additionally, the documentation that had previously suggesting the direct use of `jinja2.Template` has been revised to suggest `render_jinja2`. Users are advised to upgrade to Nautobot 1.5.7 or newer. For users that are unable to upgrade to the latest release of Nautobot, you may add the following setting to your `nautobot_config.py` to apply the sandbox environment enforcement: `TEMPLATES[1][&amp;#34;OPTIONS&amp;#34;][&amp;#34;environment&amp;#34;] = &amp;#34;jinja2.sandbox.SandboxedEnvironment&amp;#34;` After applying this change, you must restart all Nautobot services, including…&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nautobot&lt;/p&gt;
&lt;p&gt;Nautobot is a Network Source of Truth and Network Automation Platform. All users of Nautobot versions earlier than 1.5.7 are impacted by a remote code execution vulnerability. Nautobot did not properly sandbox Jinja2 template rendering. In Nautobot 1.5.7 has enabled sandboxed environments for the Jinja2 template engine used internally for template rendering for the following objects: `extras.ComputedField`, `extras.CustomLink`, `extras.ExportTemplate`, `extras.Secret`, `extras.Webhook`. While no active exploits of this vulnerability are known this change has been made as a preventative measure to protect against any potential remote code execution attacks utilizing maliciously crafted template code. This change forces the Jinja2 template engine to use a `SandboxedEnvironment` on all new installations of Nautobot. This addresses any potential unsafe code execution everywhere the helper function `nautobot.utilities.utils.render_jinja2` is called. Additionally, the documentation that had previously suggesting the direct use of `jinja2.Template` has been revised to suggest `render_jinja2`. Users are advised to upgrade to Nautobot 1.5.7 or newer. For users that are unable to upgrade to the latest release of Nautobot, you may add the following setting to your `nautobot_config.py` to apply the sandbox environment enforcement: `TEMPLATES[1][&amp;#34;OPTIONS&amp;#34;][&amp;#34;environment&amp;#34;] = &amp;#34;jinja2.sandbox.SandboxedEnvironment&amp;#34;` After applying this change, you must restart all Nautobot services, including…&lt;/p&gt;</content:encoded>
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