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01 Record

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

HighPUBLISHEDCNA: hackerone
CNA base score8.2 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H

02 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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.00% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 62.5% of scored records. A rank, not a probability.
NVD base score
8.2 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H
NVD analysis status
Deferred. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-05-31 17:38Z2 YR AGO
Last updated
2025-03-27 20:43Z1 YR AGO
Reserved
2023-07-20
Assigning CNA
hackerone
Record state
PUBLISHED
Severity
High (CVSS 8.2)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:H
Weaknesses
  • CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')Base
Data version
5.1
Document digest
0aeecd62ed55211731bf299e1ec27f3368c0d7a4f7f2260e779939444ce2f0a3

05 Affected products

VendorProductVersionsPlatforms
IvantiConnect Secure22.7R2 to < 22.7R2, 22.5R2.2 to < 22.5R2.2, 9.1R18.6 to < 9.1R18.6—

06 References