Sensor Proxy 2026 Release Notes
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These release notes are listed in reverse chronological order.
Sensor Proxy 1.4.0 (2026-05-21)
New Features
The following new features are included in Sensor Proxy 1.4.0:
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Added the ability to upload a new Certificate Authority (CA) directly to Sensor Proxy. The new CA is automatically distributed to all connected agents, ensuring uninterrupted connectivity. For more information, see Certificate Authority Rotation.
Changed Functionality and Performance Enhancements
The following enhancements are included in Sensor Proxy 1.4.0:
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Enabled nginx SSL validation by default on new Sensor Proxy installations to ensure secure upstream communication. Tenable recommends manually enabling this setting on upgraded Sensor Proxy deployments to maintain optimal security. For more information, see Tenable Sensor Proxy: Turn on Nginx SSL validation on SP upgraded to >= SP 1.4.0 from < SP 1.4.0.
Security Updates
The following are security updates included in Sensor Proxy 1.4.0:
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Updated OpenResty to version 1.27.1.2.
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Updated nginx to version 1.27.1.
For more information, see the Tenable Product Security Advisory.
Supported Platforms
The following are supported platform updates made in Sensor Proxy 1.4.0:
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Removed support for the following operating systems:
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Enterprise Linux 7
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Upgrade Notes
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You must have Sensor Proxy version 1.0.8 or later to update to 1.4.0.
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If your upgrade path skips versions of Sensor Proxy, Tenable recommends reviewing the release notes for all skipped versions. You may need to update your configurations because of features and functionality added in skipped versions.
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After you upgrade to Sensor Proxy 1.4.0, downgrading to a prior version of Sensor Proxy is not supported. If you choose to do so, Tenable highly recommends backing up your system first.