CVE-2026-105443: CWE-284 Improper Access Control in IBM WebSphere Application Server - Liberty
Description
CVE-2026-105443 is a high-severity vulnerability in IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 26.0.0.10. It involves improper access control due to insufficient isolation between servers sharing the same installation. This flaw could allow a low-privileged attacker to compromise confidentiality and integrity across server instances. No known exploits are reported in the wild, and no vendor patch information is provided.
CVSS v3.1
Score 8.2high
Affected software
IBM
WebSphere Application Server - Liberty
pkg:maven/com.ibm.websphere/websphere-application-server-libertycpe:2.3:a:ibm:websphere_application_server_liberty:17.0.0.3:*:*:*:*:*:*:*cpe:2.3:a:ibm:websphere_application_server_liberty:26.0.0.10:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
IBM WebSphere Application Server - Liberty versions from 17.0.0.3 up to and including 26.0.0.10 contain an improper access control vulnerability (CWE-284) caused by insufficient isolation between servers sharing an installation. This weakness can lead to a breach of confidentiality and integrity, as indicated by the CVSS 3.1 score of 8.2 with vector AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N. The vulnerability allows a low-privileged attacker to affect multiple server instances due to shared installation resources.
Potential Impact
The vulnerability impacts confidentiality and integrity of the affected servers, potentially allowing unauthorized access or modification of data across server instances sharing the same installation. Availability is not affected. The severity is high, reflecting the potential for significant compromise if exploited.
Mitigation Recommendations
Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Since no patch or workaround information is provided, users should monitor IBM's official channels for updates. Until a fix is available, consider isolating server instances to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-10-05T13:20:11.832Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ace95da2cdf04f656aad82a
Added to database: 10/13/2026, 20:34:34 UTC
Last enriched: 10/13/2026, 22:48:35 UTC
Last updated: 10/14/2026, 01:28:24 UTC
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.