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9.1
CVE-2026-93895: IBM WebSphere Liberty lets remote attackers bypass gRPC controls
CVE-2026-93895 · published today
Summary
Versions of IBM WebSphere Application Server Liberty from 20.0.0.12 through 26.0.0.10 may allow someone on the network who is not logged in to call gRPC services that should be restricted. This could give an attacker access to data or actions they are not supposed to have. Apply the latest IBM security updates or upgrade to a newer version to close the gap.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| ibm | websphere application server - liberty | <= 26.0.0.10 |
Original advisory text
IBM WebSphere Application Server Liberty Improper Access Control
IBM WebSphere Application Server - Liberty 20.0.0.12 through 26.0.0.10 could allow an unauthenticated remote attacker to bypass access controls configured on gRPC service methods.
Internet-facing
3 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker full control (estimated)
Type
CWE-284Improper Access Control
Timeline
Published13 Oct 2026
Updated13 Oct 2026
First seen13 Oct 2026
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