CVE-2026-3468 Cross-site scripting in Email Security

What is CVE-2026-3468?

CVE-2026-3468 is a medium-severity cross-site scripting vulnerability in SonicWall Email Security, published on 31 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

A stored Cross-Site Scripting (XSS) vulnerability has been identified in the SonicWall Email Security appliance due to improper neutralization of user-supplied input during web page generation, allowing a remote authenticated attacker as admin user to potentially execute arbitrary JavaScript code.

Weakness: CWE-79

Which versions are affected by CVE-2026-3468?

It affects 1 product.

Products include Sonicwall Email Security.

How do I fix CVE-2026-3468?

No fix has been published for CVE-2026-3468 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-2026-3468 being exploited?

There is no known exploitation of CVE-2026-3468 in the wild and no public exploit code.

Other vulnerabilities in SonicWall Email Security

• CVE-2021-20021 SonicWall Email Security Improper Privilege Management Exploited Critical 9.8
• CVE-2021-20022 SonicWall Email Security Unrestricted Upload of File Exploited High 7.2
• CVE-2021-20023 SonicWall Email Security Path Traversal Exploited Medium 4.9
• CVE-2023-0655 Information disclosure in SonicWall Email Security Medium 5.3
• CVE-2026-3470 Other in Email Security Low 3.8

Sources

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

Also known as GHSA-56vh-x74x-6hg7.