CVE-2019-3961 Cross-site scripting in Tenable Nessus

What is CVE-2019-3961?

CVE-2019-3961 is a medium-severity cross-site scripting vulnerability in Tenable Nessus, published on 25 Jun 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Nessus versions 8.4.0 and earlier were found to contain a reflected XSS vulnerability due to improper validation of user-supplied input. An unauthenticated, remote attacker could potentially exploit this vulnerability via a specially crafted request to execute arbitrary script code in a users browser session.

Weakness: CWE-79

Which versions are affected by CVE-2019-3961?

It affects 1 product.

Products include Tenable Nessus.

How do I fix CVE-2019-3961?

No fix has been published for CVE-2019-3961 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-3961 being exploited?

There is no known exploitation of CVE-2019-3961 in the wild and no public exploit code.

Other vulnerabilities in Tenable Nessus

• CVE-2022-4313 Command injection in Tenable.io, Tenable.sc and Nessus High 8.8
• CVE-2023-0524 Privilege escalation in Tenable.io, Tenable.sc, Nessus High 8.8
• CVE-2023-0101 Privilege escalation in Nessus High 8.8
• CVE-2022-32973 Privilege escalation in Nessus High 8.8
• CVE-2025-36630 Local Privilege Escalation High 8.4

All Tenable Nessus vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-mxrw-r98j-9r73.