Tenable Nessus

Vulnerability Management

Overview

The Tenable Nessus connector integrates with a Tenable Nessus scanner to synchronize scanned host assets, scan metadata, vulnerability findings, and plugin-based vulnerability definitions into the Brinqa platform. The connector enumerates scan folders and scans, exports each scan's completed history as a Nessus XML report, and streams the report to extract hosts and vulnerability findings. Plugin details are retrieved separately to build vulnerability definitions.

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Data retrieved from Tenable Nessus

Connector Object	Required	Maps to Data Model
Host	Yes	Host
Scan	Yes	Scan
Vulnerability	Yes	Vulnerability
Vulnerability Definition	Yes	Vulnerability Definition

Model relationships

note

For detailed steps on how to view the data retrieved from Tenable Nessus in the Brinqa Platform, see How to view your data.

Setup

Connection settings

When setting up a data integration, select Tenable Nessus from the Connector dropdown and provide the following:

Setting	Required	Default	Description
Server URL	Yes	—	Tenable Nessus server URL, e.g https://server-name:8834
Access Key	Yes	—	Tenable Nessus API account access key
Secret Key	Yes	—	Tenable Nessus API account secret key
Page size	No	1000	Maximum number of records to get per API request
Parallel requests	No	min(8, available processors)	Maximum number of parallel API requests
Maximum retries	No	10	The maximum number of retry attempts before giving up a request
SSL / TLS	No	false	Skip certificate verification

Authentication

Method

API Key authentication using an Access Key and Secret Key pair.

Endpoint

Method	URL
GET / POST	{url}/*

{url} is the base URL of the Nessus scanner (the url configuration property).

Request Headers

Header	Value
X-ApiKeys	accessKey={accessKey}; secretKey={secretKey}

Usage

Every API request carries the API key pair in the X-ApiKeys header. No separate token exchange or login step is required. Connectivity is verified by issuing a request to the session endpoint.

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How to obtain Tenable Nessus credentials

Generate Tenable Nessus access key and secret key

For the Tenable Nessus connector to use the Nessus API, you must provide the access key and secret key to authenticate to the Nessus server. To do so, follow these steps:

1. Log in to your organization's Tenable Nessus account.

2. Navigate to Settings > My Account.

3. Click the API Keys tab and click Generate.

4. A confirmation dialog appears. Click Generate to display your new keys.

   Your new access key and secret key display. You cannot view the keys again. Copy the API keys and save them in a secure location.

Note: If you do not have the permissions to create API keys, contact your Tenable Nessus administrator. For additional information, see Tenable Nessus documentation.

Data & mappings

Attribute mappings

Expand the sections below to view the mappings between the source and the Brinqa data model attributes:

Host

Source Field Name	SDM Attribute
cpe	OS_CPE
host-fqdn	PUBLIC_DNS_NAMES
host-fqdn	PRIVATE_DNS_NAMES
host-ip	IP_ADDRESSES
host-ip	PUBLIC_IP_ADDRESSES
host-ip	PRIVATE_IP_ADDRESSES
HOST_END_TIMESTAMP	LAST_ASSESSED
Instant.now()	LAST_CAPTURED
mac-address	MAC_ADDRESSES
name	HOSTNAMES
name + operating-system	DESCRIPTION
name / host-fqdn / netbios-name / host-ip	NAME
operating-system	OPERATING_SYSTEM
ReportHost.name	UID
scan folder id	FOLDER_ID
scan history UUID	SCAN_ID
system-type + constant	CATEGORIES

Scan

Source Field Name	SDM Attribute
scan history creation_date	Creation date
scan history last_modification_date	Last modified
scan history status	Status
scan history UUID	Sys ID
scan report Preferences plugin selection	Plugins
scan.folder.id	Folder ID
scan.folder.name	Folder name
scan.info.uuid	Scan UUID
scan.name	Name

Vulnerability

Source Field Name	SDM Attribute
constant	STATUS
derived from status	STATUS_CATEGORY
host name	TARGETS
host-fqdn	PUBLIC_DNS_NAMES
host-fqdn	PRIVATE_DNS_NAMES
host-ip	IP_ADDRESSES
HOST_END_TIMESTAMP	LAST_FOUND
Instant.now()	LAST_CAPTURED
mac-address	MAC_ADDRESSES
MD5(pluginID, host name, host-ip, host-fqdn, netbios-name, mac-address, svc_name, port, protocol)	UID
netbios-name	HOSTNAMES
plugin_output	RESULTS
pluginID	TYPE
port	PORT
protocol	PROTOCOL
scan folder id	FOLDER_ID
scan history UUID	SCAN_ID
severity	SEVERITY
severity	SEVERITY_SCORE
severity	SOURCE_SEVERITY
severity	SOURCE_SEVERITY_SCORE
svc_name	SERVICE

Vulnerability Definition

Source Field Name	SDM Attribute
cpe	AFFECTED
cve	CVE_IDS / CVE_RECORDS
cvss3_base_score	CVSS_V3_BASE_SCORE
cvss3_temporal_score	CVSS_V3_TEMPORAL_SCORE
cvss3_vector	CVSS_V3_VECTOR, CVSS_V3_AC, CVSS_V3_AI, CVSS_V3_AV, CVSS_V3_CI, CVSS_V3_E, CVSS_V3_II, CVSS_V3_PR, CVSS_V3_RC, CVSS_V3_RL, CVSS_V3_SEVERITY, CVSS_V3_UI
cvss_base_score	CVSS_V2_BASE_SCORE
cvss_temporal_score	CVSS_V2_TEMPORAL_SCORE
cvss_vector	CVSS_V2_VECTOR, CVSS_V2_AC, CVSS_V2_AI, CVSS_V2_AU, CVSS_V2_AV, CVSS_V2_CI, CVSS_V2_E, CVSS_V2_II, CVSS_V2_RC, CVSS_V2_RL, CVSS_V2_SEVERITY
cwe	CWE_IDS / WEAKNESSES
description	DESCRIPTION
exploit_available	EXPLOIT_AVAILABLE
exploit_framework_*	EXPLOITS
exploitability_ease	EXPLOIT_EASE
exploited_by_malware	EXPLOITED_BY_MALWARE
in_the_news	IN_THE_NEWS
Instant.now()	LAST_CAPTURED
patch_publication_date	PATCHABLE
patch_publication_date	PATCH_PUBLICATION_DATE
plugin family	CATEGORIES
plugin.id	UID
plugin_name	NAME
plugin_publication_date	PUBLISHED_DATE
plugin_type	PLUGIN_TYPE
risk_factor	SOURCE_SEVERITY / SOURCE_SEVERITY_SCORE
risk_factor	SEVERITY / SEVERITY_SCORE
see_also	SEE_ALSO
solution	RECOMMENDATION
synopsis	SUMMARY
xref	REFERENCES

Operations & API

Operations & API

Expand each connector object to see its operation options, delta-sync behavior, and the API it uses. See connector operation options for how to apply operation options (keys and values are case-sensitive).

Host

Operation options

This object does not support any operation options.

Delta sync

The connector README does not document sync behavior for this object.

API

• Type: REST endpoint (Nessus XML report export)

Scan

Operation options

This object does not support any operation options.

Delta sync

The connector README does not document sync behavior for this object.

API

• Type: REST endpoint (Nessus XML report export)

Vulnerability

Operation options

This object does not support any operation options.

Delta sync

The connector README does not document sync behavior for this object.

API

• Type: REST endpoint (Nessus XML report export)

Vulnerability Definition

Operation options

This object does not support any operation options.

Delta sync

The connector README does not document sync behavior for this object.

API

• Type: REST endpoint (JSON)

Changelog

Changelog

The Tenable Nessus connector has undergone the following changes:

Version	Description	Migration Steps
3.1.50	No changes in this release.	N/A
3.1.49	Bug Fixes - Vulnerability Definition — The "Exploit available" attribute is now stored as a true/false value, consistent with the other Tenable connectors (Tenable SC, Tenable IO VM/WAS). Previously it was stored as free text, which prevented its values from being consolidated with the same attribute reported by those connectors.	• Vulnerability Definition: the "Exploit available" attribute changed from text to a true/false value. Re-sync the Tenable Nessus connector to repopulate these records with the corrected type.
3.1.48	Bug Fixes - Vulnerability — Corrected the "Last found" attribute to be stored as a proper timestamp (the scan-end timestamp was being stored as a number). - Host — Corrected the "Last assessed" attribute to be stored as a proper timestamp (the scan-end timestamp was being stored as a number).	• Vulnerability / Host: the date attributes listed above changed from numbers to timestamps. Re-sync the Tenable Nessus connector to repopulate these records with the corrected type.
3.1.47	No changes in this release.	N/A
3.1.46	Improvements Dependency Upgrades - Refreshed internal model and CVSS scoring libraries to the latest stable releases to pick up upstream fixes and stay aligned with the rest of the Brinqa connector platform. Cross-Connector Attribute Consolidation - Every connector-defined custom attribute now participates in cross-connector consolidation by default. When the same asset or finding is observed by another connector, Brinqa will merge values for these attributes consistently rather than treating each connector's values as independent.	• Re-sync the connector after upgrading so that previously synced records pick up the new consolidation mappings. Existing data remains intact; the re-sync ensures consolidated values for assets and findings shared with other connectors converge correctly.
3.1.45 — Withdrawn	This release shipped a regression and has been superseded by 3.1.46. Customers should skip 3.1.45 and upgrade directly from 3.1.44 to 3.1.46.	N/A
3.1.44	Improvements Dependency Upgrades - Upgraded internal framework and storage libraries to the latest stable versions for improved reliability, security patches, and alignment with the rest of the connector platform.	N/A
3.1.43	No changes in this release.	N/A
3.1.42	No changes in this release.	N/A
3.1.41	New Features - Host / Vulnerability / Vulnerability Definition — Added a "Last captured" attribute that records the time each record was observed during a sync, making it easier to see how recently Brinqa last saw a given asset, finding, or finding definition.	N/A
3.1.40	No changes in this release.	N/A
3.1.39	Improvements - Added handling for HTTP 504 (Gateway Timeout) responses from Tenable Nessus. Affected requests are now logged and skipped rather than failing the entire sync, improving resilience when the Nessus server is temporarily overloaded.	N/A
3.1.38	No changes in this release.	N/A
3.1.37	No changes in this release.	N/A
3.1.36	No changes in this release.	N/A
3.1.35	No changes in this release.	N/A
3.1.34	No changes in this release.	N/A
3.1.33	No changes in this release.	N/A
3.1.32	Improvements - Added automatic retry and graceful skip handling for HTTP 503 (Service Unavailable) responses from Tenable Nessus, so transient server-side unavailability no longer aborts an in-progress sync.	N/A
3.1.31	No changes in this release.	N/A
3.1.30	No changes in this release.	N/A
3.1.29	No changes in this release.	N/A
3.1.28	No changes in this release.	N/A
3.1.27	No changes in this release.	N/A
3.1.26	No changes in this release.	N/A
3.1.25	No changes in this release.	N/A
3.1.24	No changes in this release.	N/A
3.1.23	Bug Fixes - Vulnerability Definition — Fixed CVSS v3 metric parsing: the detailed CVSS v3 fields (attack vector, complexity, privileges required, severity, etc.) were previously derived from the CVSS v2 vector and could be incorrect or missing. They are now parsed from the correct CVSS v3 vector. Parsing was also hardened to tolerate vendor-specific vector prefixes and malformed vectors without dropping the record.	• Vulnerability Definition: re-sync the connector to repopulate the corrected CVSS v3 metric attributes on existing finding definitions.
3.1.22	No changes in this release.	N/A
3.1.21	No changes in this release.	N/A
3.1.20	No changes in this release.	N/A
3.1.19	No changes in this release.	N/A
3.1.18	No changes in this release.	N/A
3.1.17	No changes in this release.	N/A
3.1.16	Bug Fixes - Vulnerability Definition — CVSS v2 and v3 base and temporal scores are now stored as full-precision decimal values instead of single-precision floats, eliminating small rounding artifacts in scores.	• Vulnerability Definition: the CVSS base and temporal score attributes changed from a single-precision to a double-precision numeric type. Re-sync the connector to repopulate these scores with the corrected type.
3.1.15	New Features - Vulnerability / Vulnerability Definition — Added a normalized severity score and a source severity score, providing numeric severity values alongside the existing severity labels. Improvements - Vulnerability — The source severity attribute now carries the raw severity value reported by Nessus rather than a derived numeric code, making it consistent with the underlying scan data.	• Vulnerability: the source severity attribute's stored values changed. Re-sync the connector so existing findings reflect the corrected source severity and the new severity score attributes.
3.1.14	No changes in this release.	N/A
3.1.13	No changes in this release.	N/A
3.1.12	Improvements - Added a configurable "Max retries" connection setting (default 10) that controls how many times a failed Tenable Nessus API request is retried before giving up. Errors flagged as non-retryable now fail fast instead of being retried unnecessarily.	N/A
3.1.11	No changes in this release.	N/A
3.1.10	No changes in this release.	N/A
3.1.9	No changes in this release.	N/A
3.1.8	No changes in this release.	N/A
3.1.7	No changes in this release.	N/A
3.1.6	No changes in this release.	N/A
3.1.5	No changes in this release.	N/A
3.1.4	No changes in this release.	N/A
3.1.3	No changes in this release.	N/A
3.1.2	No changes in this release.	N/A
3.1.1	No changes in this release.	N/A
3.1.0	No changes in this release.	N/A
3.0.16	No changes in this release.	N/A
3.0.15	No changes in this release.	N/A
3.0.14	No changes in this release.	N/A
3.0.13	No changes in this release.	N/A
3.0.12	No changes in this release.	N/A
3.0.11	No changes in this release.	N/A
3.0.10	No changes in this release.	N/A
3.0.9	No changes in this release.	N/A
3.0.8	No changes in this release.	N/A
3.0.7	No changes in this release.	N/A
3.0.6	No changes in this release.	N/A
3.0.5	Improvements - Vulnerability Definition — Patch information is now reported more clearly: a dedicated "Patch publication date" attribute replaces the previous "Patch published" attribute, and a "Patch available" indicator is set whenever a patch publication date is present.	• Vulnerability Definition: the "Patch published" attribute was renamed to "Patch publication date". Values stored under the old attribute name remain in place but are no longer updated. Re-sync the connector so finding definitions populate the new attribute.
3.0.4	Improvements - Vulnerability Definition — Severity is now expressed as a standardized severity score attribute, aligning Tenable Nessus with the severity scoring used across other Brinqa connectors.	• Vulnerability Definition: the previous severity-number attribute was replaced by a standardized severity-score attribute, and the scoring scale changed. Re-sync the connector so existing finding definitions are repopulated with the new severity score.
3.0.3	No changes in this release.	N/A
3.0.2	Overview The Tenable Nessus connector integrates with Tenable Nessus to synchronize scanned hosts, completed scans, and the vulnerabilities and vulnerability definitions discovered during scanning. Category: Vulnerability Management Models	N/A