IBM WebSphere Application Server Liberty: Incorrect authorization
Summary
IBM WebSphere Application Server Liberty versions 20.0.0.12 through 26.0.0.10 contain an incorrect authorization flaw (CWE-863). A remote attacker can bypass security restrictions. IBM states the issue applies when the grpc-1.0 feature is enabled, and the bulletin lists no workaround.
Affected
- IBM WebSphere Application Server Liberty 20.0.0.12 through 26.0.0.10
- Relevant only with the grpc-1.0 feature enabled (per IBM)
Fixed in
- Interim fix that resolves APAR DT502929 (after upgrading to the minimum fix pack level required by the interim fix)
- Liberty Fix Pack 26.0.0.11 or later (targeted availability 4Q2026)
Workaround
None (per IBM security bulletin)
Exploitation
- CISA SSVC assessment: exploitation none, not automatable, total technical impact
- No known exploitation in the wild and no public proof of concept found at the time of research
Our recommendation
- Check whether Liberty runs directly or inside another IBM product (for example OpenPages or License Metric Tool) and whether grpc-1.0 is enabled
- Apply the interim fix for DT502929 or Liberty Fix Pack 26.0.0.11 or later as soon as possible, prioritising internet-facing servers
- Until patched, restrict network access to affected servers and monitor gRPC service access
- Verify the final CVSS score in NVD, as the sources differ (9.1 in NVD data, 7.4 in IBM's bulletin)
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- IBM Security Bulletin: IBM WebSphere Application Server Liberty is affected by multiple vulnerabilities (CVE-2026-93895, CVE-2026-95695, CVE-2026-95696) www.ibm.com
- Strix AI: CVE-2026-95695 www.strix.ai
- OffSeq Radar: CVE-2026-95695 radar.offseq.com
- SecurityOnline: Critical IBM WebSphere Liberty vulnerabilities patched securityonline.info
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 06:37.
Original description (NVD)
IBM WebSphere Application Server - Liberty 20.0.0.12 through 26.0.0.10 could allow a remote attacker to bypass security restrictions due to incorrect authorization.
NVD references (1)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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