CVE-2023-38551 (CVSS 8.2)

Description

A CRLF Injection vulnerability in Ivanti Connect Secure (9.x, 22.x) allows an authenticated high-privileged user to inject malicious code on a victim’s browser, thereby leading to cross-site scripting attack.

Is your site exposed to CVE-2023-38551?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.2

HIGH

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H

Weakness Type (CWE)

CWE-93 CWE-93

References

Other References

https://forums.ivanti.com/s/article/Security-Advisory-May-2024 https://forums.ivanti.com/s/article/Security-Advisory-May-2024

Frequently Asked Questions

What is CVE-2023-38551? +

A CRLF Injection vulnerability in Ivanti Connect Secure (9.x, 22.x) allows an authenticated high-privileged user to inject malicious code on a victim’s browser, thereby leading to cross-site scripting attack. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2023-38551? +

CVE-2023-38551 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

How do I check if I'm vulnerable to CVE-2023-38551? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2024-51501

Refit is an automatic type-safe REST library for .NET Core, Xamarin and .NET The various header-related Refit attributes (Header, HeaderCollection …

CVE-2025-59419

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.128.Final and 4.2.7.Final, the SMTP codec in Netty …

CVE-2026-50188

Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins using the Kirby Http …

CVE-2026-45067

### Description `Symfony\Component\Mime\Address` is the value-object every Symfony Mailer address (to/cc/bcc/from/reply-to) flows through; its constructor is documented as validating the …

CVE-2026-43968

Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in ninenines cowlib allows SSE event splitting and injection via unvalidated field …

CVE-2026-49756

Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in wojtekmach Req allows multipart parameter smuggling via attacker-influenced part metadata. Req.Utils.encode_form_part/2 …

CVE-2023-38551