CVE-2023-36637 Cross-site scripting in FortiMail

What is CVE-2023-36637?

CVE-2023-36637 is a low-severity cross-site scripting vulnerability in Fortinet FortiMail, published on 10 Oct 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiMail version 7.2.0 through 7.2.2 and before 7.0.5 allows an authenticated attacker to inject HTML tags in FortiMail's calendar via input fields.

Weakness: CWE-79

Which versions are affected by CVE-2023-36637?

It affects 1 product.

Products include Fortinet Fortimail.

How do I fix CVE-2023-36637?

No fix has been published for CVE-2023-36637 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-2023-36637 being exploited?

There is no known exploitation of CVE-2023-36637 in the wild and no public exploit code.

Other vulnerabilities in Fortinet FortiMail

• CVE-2026-104286 Fortinet FortiMail Path Traversal Exploited Critical 9.8
• CVE-2021-36166 Auth bypass in Fortinet FortiMail Critical 9.8
• CVE-2021-24007 SQL injection in Fortinet FortiMail Critical 9.8
• CVE-2020-9294 Auth bypass in FortiMail Critical 9.8
• CVE-2023-47539 Auth bypass in FortiMail Critical 9.0

Sources

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

Also known as GHSA-mmm9-8xmv-42v6.