# CVE-2026-14909: IBM WebSphere Application Server Liberty information disclosure in restConnector

Source: https://junglewise.ai/threats/cve-2026-14909-ibm-websphere-application-server-liberty-17-0-0-3-through-26-0-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-14909 · Severity: medium · CVSS 6.5 · Published 2026-10-13

IBM WebSphere Application Server Liberty is an enterprise Java runtime used to deploy business applications. When the restConnector-2.0 feature is enabled, authenticated attackers can extract sensitive information through error messages, compromising data confidentiality. Organizations using this feature should upgrade immediately to the patched version.

Technologies: [IBM WebSphere Application Server Liberty](https://junglewise.ai/threats/technologies/websphere-application-server-liberty). Vendors: [IBM](https://junglewise.ai/threats/vendors/ibm).

## Quick answers

**Is CVE-2026-14909 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-14909 being exploited in the wild.

**How severe is CVE-2026-14909?** Medium severity, with a CVSS score of 6.5, published 13 October 2026.

**Which products and versions are affected?** IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.9.

**Is there a fix for CVE-2026-14909?** Yes: fixed in WebSphere Application Server Liberty 26.0.0.10. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-14909 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-14909?** 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 WebSphere Application Server Liberty 26.0.0.10

## Technical details

An information disclosure vulnerability (CWE-209) in WebSphere Application Server Liberty versions 17.0.0.3 through 26.0.0.9 allows authenticated attackers to obtain sensitive information when restConnector-2.0 is enabled. The vulnerability leverages error messages that expose confidential data. The attack requires network access and valid authentication credentials.

## Affected products

- IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.9

## Timeline

- 2026-10-13: disclosed
- 2026-10: patched: Fix pack 26.0.0.10 availability expected October 2026

## References

- [https://www.ibm.com/support/pages/node/7291394](https://www.ibm.com/support/pages/node/7291394)

## Related threats

- [IBM WebSphere Application Server Liberty information disclosure in JMX REST connector](https://junglewise.ai/threats/cve-2026-78636-ibm-websphere-application-server-liberty-17-0-0-3-through-26-0-0)
- [IBM WebSphere Application Server Liberty server-side request forgery in Admin Center](https://junglewise.ai/threats/cve-2026-11547-ibm-websphere-application-server-liberty-17-0-0-3-through-26-0-0)
- [IBM WebSphere Application Server Liberty open redirect](https://junglewise.ai/threats/cve-2026-10844-ibm-websphere-application-server-liberty-17-0-0-3-through-26-0-0)
- [IBM WebSphere Application Server Liberty information disclosure](https://junglewise.ai/threats/cve-2026-108284-ibm-websphere-application-server-liberty-17-0-0-3-through-26-0-0)
- [IBM WebSphere Application Server Liberty information disclosure](https://junglewise.ai/threats/cve-2026-103320-ibm-websphere-application-server-liberty-17-0-0-3-through-26-0-0)