How severe is CVE-2026-1561?

CVE-2026-1561 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-1561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1561?

CVE-2026-1561 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1561?

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

Does CVE-2026-1561 have an EU (EUVD) identifier?

Yes. CVE-2026-1561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15982.

When was CVE-2026-1561 published?

CVE-2026-1561 was published on 2026-03-25 and last updated on 2026-06-17.

CVE-2026-1561

CVE-2026-1561 is a medium-severity vulnerability in Ibm Websphere Application Server with a CVSS 3.x base score of 5.4. 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-15982
Weakness: CWE-918
Affected product: Ibm Websphere Application Server
Published: 2026-03-25
Last modified: 2026-06-17

Description

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.3 IBM WebSphere Application Server Liberty is vulnerable to server-side request forgery (SSRF). This may allow remote attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.

Frequently asked questions

What is CVE-2026-1561?: IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.3 IBM WebSphere Application Server Liberty is vulnerable to server-side request forgery (SSRF). This may allow remote attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.
How severe is CVE-2026-1561?: CVE-2026-1561 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-1561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1561?: CVE-2026-1561 affects Ibm Websphere Application Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1561?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-1561 have an EU (EUVD) identifier?: Yes. CVE-2026-1561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-15982.
When was CVE-2026-1561 published?: CVE-2026-1561 was published on 2026-03-25 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7267347

Affected products (1)

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

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