CVE-2026-79715: IBM WebSphere Application Server Liberty path traversal

CVE-2026-79715 · Severity: medium · CVSS 5.5 · Published 2026-10-13

IBM WebSphere Application Server Liberty is a Java application server that runs business applications. A local attacker could upload a specially crafted application archive that writes files outside the intended directory, allowing unauthorized file modification on the system where Liberty runs.

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

Quick answers

Is CVE-2026-79715 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-79715 being exploited in the wild.
How severe is CVE-2026-79715?
Medium severity, with a CVSS score of 5.5, 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-2026-79715?
Yes: fixed in 26.0.0.10. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-79715 attacked?
It is attacked with local access, in a web application.
Am I affected by CVE-2026-79715?
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: 26.0.0.10

Technical details

A path traversal vulnerability (CWE-22) in IBM WebSphere Application Server Liberty allows a local attacker with low privileges to escape directory restrictions when deploying application archives. The attacker can craft a malicious archive that writes files to arbitrary locations on the system. A fix is available in Liberty 26.0.0.10 and later.

Affected products

  • IBM WebSphere Application Server Liberty 17.0.0.3 through 26.0.0.9

Timeline

  • 2026-10-13: disclosed

References

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