How severe is CVE-2026-9320?

CVE-2026-9320 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-9320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9320?

CVE-2026-9320 primarily affects Ibm Websphere Application Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-9320?

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

Does CVE-2026-9320 have an EU (EUVD) identifier?

Yes. CVE-2026-9320 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38254.

When was CVE-2026-9320 published?

CVE-2026-9320 was published on 2026-06-22 and last updated on 2026-06-23.

CVE-2026-9320

CVE-2026-9320 is a medium-severity vulnerability in Ibm Websphere Application Server with a CVSS 3.x base score of 5.9. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38254
Weakness: CWE-400
Affected product: Ibm Websphere Application Server
Published: 2026-06-22
Last modified: 2026-06-23

Description

IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.

Frequently asked questions

What is CVE-2026-9320?: IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.
How severe is CVE-2026-9320?: CVE-2026-9320 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-9320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9320?: CVE-2026-9320 primarily affects Ibm Websphere Application Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-9320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-9320 have an EU (EUVD) identifier?: Yes. CVE-2026-9320 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38254.
When was CVE-2026-9320 published?: CVE-2026-9320 was published on 2026-06-22 and last updated on 2026-06-23.

References

https://www.ibm.com/support/pages/node/7276579

Affected products (2)

cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:*

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