CVE-2021-38997 - CVE House
Back to Database
Status published Medium CVE-2021-38997

IBM API Connect HOST header injection

Vulnerability Description

IBM API Connect V10.0.0.0 through V10.0.5.0, V10.0.1.0 through V10.0.1.7, and V2018.4.1.0 through 2018.4.1.19 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking. IBM X-Force ID: 213212.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-38997

Credits & Attribution

No credits recorded in the NVD database.

References

More from IBM

View All →
CVE-2025-66487
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Low 2.7
CVE-2025-66486
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium 4.8
CVE-2025-66485
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium 5.4
CVE-2025-66484
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium 5.5
CVE-2025-66483
Multiple vulnerabilities have been addressed in IBM Aspera Shares
Medium 6.3

Affected Vendor

Affected Software

API Connect
Vulnerable Versions:
10.0.0.0, 10.0.1.0, 2018.4.1.0

Timeline

Official Publish: December 1st, 2022
Last Modified: April 23rd, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Weaknesses (CWE)

CWE-644

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.