Is CVE-2026-9320 in the CISA KEV catalog?

No. CVE-2026-9320 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-9320?

CVE-2026-9320 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2026-9320?

CVE-2026-9320 has an EPSS score of 0.32% (24th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-9320?

Upgrade websphere application server to 26.0.0.7 or later.

CVE & CISA-KEV Catalog

CVE-2026-9320

MEDIUM

5.9

CVSS v3

NVD

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.

CWE-400Resource Exhaustion

How to fix

Remediation Available

websphere application serverNVD

Affected:>= 17.0.0.3, < 26.0.0.7Fixed in:26.0.0.7CVE-2026-9320derived from NVD

Affected:>= 9.0.0.0, < 9.0.5.29Fixed in:9.0.5.29CVE-2026-9320derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.32%probability of exploitation in 30 days

24thpercentile

Low risk: more likely to be exploited than 24% of all known CVEs.

References

Vendor Advisory1

ibm.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-23.