Is CVE-2026-93905 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-93905 being exploited in the wild.

How severe is CVE-2026-93905?

High severity, with a CVSS score of 8.2, published 13 October 2026.

Which products and versions are affected?

IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10.

How is CVE-2026-93905 attacked?

It is attacked over the network.

Am I affected by CVE-2026-93905?

Check whether you run IBM WebSphere Application Server Liberty at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-93905: IBM WebSphere Application Server Liberty deserialization of untrusted data

CVE-2026-93905 · Severity: high · CVSS 8.2 · Published 2026-10-13

IBM WebSphere Application Server Liberty is an application server that deploys and runs enterprise Java applications. When the batchManagement feature is enabled, an unauthenticated attacker can exploit a deserialization vulnerability to corrupt the stored state of batch job instances, potentially disrupting scheduled business processes or causing data integrity issues. No authentication is required to exploit this vulnerability over the network.

Technologies: IBM WebSphere Application Server Liberty. Vendors: IBM.

Quick answers

Is CVE-2026-93905 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-93905 being exploited in the wild.
How severe is CVE-2026-93905?: High severity, with a CVSS score of 8.2, published 13 October 2026.
Which products and versions are affected?: IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10.
Is there a fix for CVE-2026-93905?: Yes: fixed in Liberty Fix Pack 26.0.0.11 or later; interim fixes available for earlier versions (APAR DT502467). Until then: Disable the batchManagement-1.0 feature if it is not required for operations. Alternatively, apply the interim fix for APAR DT502467 on supported fix pack levels prior to upgrading to Liberty Fix Pack 26.0.0.11. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-93905 attacked?: It is attacked over the network.
Am I affected by CVE-2026-93905?: Check whether you run IBM WebSphere Application Server Liberty at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: Liberty Fix Pack 26.0.0.11 or later; interim fixes available for earlier versions (APAR DT502467)

Disable the batchManagement-1.0 feature if it is not required for operations. Alternatively, apply the interim fix for APAR DT502467 on supported fix pack levels prior to upgrading to Liberty Fix Pack 26.0.0.11.

Technical details

The vulnerability is a deserialization of untrusted data (CWE-502) in the batchManagement-1.0 feature of WebSphere Application Server Liberty. An unauthenticated remote attacker can send crafted serialized objects over the network to corrupt the persisted status of batch job instances. The feature must be explicitly enabled for the vulnerability to be exploitable, and a fix is available in Liberty Fix Pack 26.0.0.11 or later.

Affected products

IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.10

Timeline

2026-10-13: disclosed

References

https://www.ibm.com/support/pages/node/7292232

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