How severe is CVE-2026-11594?

CVE-2026-11594 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-11594 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-11594?

CVE-2026-11594 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-11594?

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

When was CVE-2026-11594 published?

CVE-2026-11594 was published on 2026-06-30 and last updated on 2026-07-02.

CVE-2026-11594

CVE-2026-11594 is a high-severity vulnerability in Ibm Websphere Application Server with a CVSS 3.x base score of 8.5. 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: High (CVSS 3.x base score 8.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Websphere Application Server
Published: 2026-06-30
Last modified: 2026-07-02

Description

IBM WebSphere Application Server 9.0, and 8.5 is affected by a cross-site scripting vulnerability in the administrative console.

Frequently asked questions

What is CVE-2026-11594?: IBM WebSphere Application Server 9.0, and 8.5 is affected by a cross-site scripting vulnerability in the administrative console.
How severe is CVE-2026-11594?: CVE-2026-11594 has a CVSS 3.x base score of 8.5, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-11594 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-11594?: CVE-2026-11594 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-11594?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-11594 published?: CVE-2026-11594 was published on 2026-06-30 and last updated on 2026-07-02.

References

https://www.ibm.com/support/pages/node/7277546

Affected products (1)

cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:traditional:*:*:*

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