EUVD-2026-39409
GHSA-vqwf-3hj2-5ghm
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
AV:L because attack is file-delivered with no network path; PR:N for attacker; UI:R for required privileged import; C:L only for scan data exfiltration.
Primary rating from Vendor (tenable).
CVSS VectorVendor: tenable
Lifecycle Timeline
3DescriptionCVE.org
A SQL injection vulnerability in Nessus allows an attacker to craft a malicious scan result file that, when imported by a privileged user, injects malicious SQL into the scan results database, potentially enabling exfiltration of scan-result data.
AnalysisAI
SQL injection in Tenable Nessus's scan result import functionality allows an attacker to craft a malicious scan file that, when imported by a privileged operator, injects SQL into the scan results database and exfiltrates stored scan data. The attack is entirely dependent on social engineering: the threat actor has no direct access to the Nessus instance and must convince a privileged user to import the weaponized file. A proof-of-concept exists per CVSS temporal indicator E:P, and Tenable has issued an official fix under advisory TNS-2026-17. No active exploitation is confirmed in CISA KEV.
Technical ContextAI
CWE-89 (SQL Injection) is the root cause - user-controlled data embedded in an imported scan result file is incorporated into SQL queries against the Nessus scan results database without adequate sanitization or parameterization. The affected product is identified by CPE cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:*, representing all versions of Tenable's standalone Nessus vulnerability scanner. The injection is read-oriented: CVSS metrics show C:L with I:N and A:N, indicating the flaw enables data exfiltration from the scan results store but does not allow write manipulation or denial of service. The scan results database in Nessus may contain sensitive security-relevant data including host inventories, discovered vulnerabilities, network topology, and credentialed scan output.
RemediationAI
Apply the official Tenable patch as documented in advisory TNS-2026-17 (https://www.tenable.com/security/tns-2026-17); the CVSS temporal indicator RL:O confirms an official fix has been released, though the exact fixed version number is not specified in the provided data and must be verified directly from the advisory. As a compensating control pending patching, restrict the scan import capability to the minimum set of users operationally required, and enforce a policy prohibiting import of .nessus files received from external or untrusted sources - only files originating from internal, controlled scan infrastructure should be imported. Enforcing this policy may disrupt legitimate cross-team scan sharing workflows and should be communicated to security operations teams before implementation.
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Same weakness CWE-89 – SQL Injection
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External POC / Exploit Code
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