CVE-2023-38551

Severity: high (CVSS 8.2 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-31 · updated 2026-06-17
Weakness: CWE-93

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.

Affected products

Ivanti Connect Secure (Pulse Secure): from 22.7R2 before 22.7R2; from 22.5R2.2 before 22.5R2.2; from 9.1R18.6 before 9.1R18.6 — fixed in 22.5R2.2, 22.7R2, 9.1R18.6

How to fix

Upgrade to a fixed version: Ivanti Connect Secure (Pulse Secure) 22.5R2.2, 22.7R2, 9.1R18.6. Check the vendor advisory for mitigations.

References

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

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