How severe is CVE-2009-0856?

CVE-2009-0856 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-0856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-0856?

CVE-2009-0856 primarily affects Ibm Websphere Application Server. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-0856?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-0856 published?

CVE-2009-0856 was published on 2009-03-09 and last updated on 2026-06-16.

CVE-2009-0856

CVE-2009-0856 is a medium-severity vulnerability in Ibm Websphere Application Server with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Websphere Application Server
Published: 2009-03-09
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in sample applications in IBM WebSphere Application Server (WAS) 6.0.2 before 6.0.2.35, and 6.1 before 6.1.0.23 on z/OS, allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Frequently asked questions

What is CVE-2009-0856?: Multiple cross-site scripting (XSS) vulnerabilities in sample applications in IBM WebSphere Application Server (WAS) 6.0.2 before 6.0.2.35, and 6.1 before 6.1.0.23 on z/OS, allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.
How severe is CVE-2009-0856?: CVE-2009-0856 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-0856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-0856?: CVE-2009-0856 primarily affects Ibm Websphere Application Server. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-0856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-0856 published?: CVE-2009-0856 was published on 2009-03-09 and last updated on 2026-06-16.

References

Affected products (24)

cpe:2.3:a:ibm:websphere_application_server:6.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.14:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.15:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.16:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.17:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.18:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.19:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.20:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.21:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:6.1.0.22:*:*:*:*:*:*:*

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