Quick answers
- Is CVE-2026-93895 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-93895 being exploited in the wild.
- How severe is CVE-2026-93895?
- Critical severity, with a CVSS score of 9.1, published 13 October 2026.
- Which products and versions are affected?
- IBM WebSphere Application Server Liberty 20.0.0.12 through 26.0.0.10.
- Is there a fix for CVE-2026-93895?
- Yes: fixed in Liberty Fix Pack 26.0.0.11 or later; interim fix APAR DT502929. Until then: Ensure the grpc-1.0 feature is not enabled unless required, and refer to IBM documentation on how to determine if specific features are enabled in Liberty. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-93895 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-93895?
- 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 fix APAR DT502929
Ensure the grpc-1.0 feature is not enabled unless required, and refer to IBM documentation on how to determine if specific features are enabled in Liberty.
Technical details
An improper access control vulnerability in the gRPC-1.0 feature allows unauthenticated network attackers to bypass authorization checks on gRPC service methods. The vulnerability affects Liberty versions 20.0.0.12 through 26.0.0.10 when the grpc-1.0 feature is enabled. Fixes are available via interim fix APAR DT502929 or Liberty Fix Pack 26.0.0.11 and later.
Affected products
- IBM WebSphere Application Server Liberty 20.0.0.12 through 26.0.0.10
Timeline
- 2026-10-13: disclosed