How severe is CVE-2008-4283?

CVE-2008-4283 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2008-4283 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4283?

CVE-2008-4283 primarily affects Ibm Websphere Application Server. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-4283?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-4283 published?

CVE-2008-4283 was published on 2009-02-10 and last updated on 2026-06-16.

CVE-2008-4283

CVE-2008-4283 is a critical-severity vulnerability in Ibm Websphere Application Server with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Ibm Websphere Application Server
Published: 2009-02-10
Last modified: 2026-06-16

Description

CRLF injection vulnerability in the WebContainer component in IBM WebSphere Application Server (WAS) 5.1.1.19 and earlier 5.1.x versions allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.

Frequently asked questions

What is CVE-2008-4283?: CRLF injection vulnerability in the WebContainer component in IBM WebSphere Application Server (WAS) 5.1.1.19 and earlier 5.1.x versions allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via unspecified vectors.
How severe is CVE-2008-4283?: CVE-2008-4283 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2008-4283 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4283?: CVE-2008-4283 primarily affects Ibm Websphere Application Server. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-4283?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-4283 published?: CVE-2008-4283 was published on 2009-02-10 and last updated on 2026-06-16.

References

Affected products (46)

cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0:*:z_os:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.14:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.15:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.0.2.16:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:5.1.1.12:*:*:*:*:*:*:*

More vulnerabilities in Ibm Websphere Application Server

CVE-2015-1920 — Critical (CVSS 10.0): IBM WebSphere Application Server (WAS) 6.1 through 6.1.0.47, 7.0 before 7.0.0.39, 8.0 before 8.0.0.11, and 8.5 before…
CVE-2013-1777 — Critical (CVSS 10.0): The JMX Remoting functionality in Apache Geronimo 3.x before 3.0.1, as used in IBM WebSphere Application Server (WAS)…
CVE-2013-0462 — Critical (CVSS 10.0): Unspecified vulnerability in IBM WebSphere Application Server (WAS) 6.1, 7.0 before 7.0.0.27, 8.0, and 8.5 has unknown…
CVE-2012-5955 — Critical (CVSS 10.0): Unspecified vulnerability in the IBM HTTP Server component 5.3 in IBM WebSphere Application Server (WAS) for z/OS…
CVE-2011-1377 — Critical (CVSS 10.0): The Web Services Security component in the Web Services Feature Pack before 6.1.0.41 for IBM WebSphere Application…
CVE-2010-3186 — Critical (CVSS 10.0): IBM WebSphere Application Server (WAS) 7.x before 7.0.0.13, and WebSphere Application Server Feature Pack for Web…

All CVEs affecting Ibm Websphere Application Server →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →