Description
IBM WebSphere Application Server 9.0, and 8.5 could allow a remote attacker to bypass authentication and obtain sensitive information by sending a crafted unauthenticated request.
Published: 2026-09-14
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Authentication Bypass
Action: Patch Now
AI Analysis

Impact

IBM WebSphere Application Server versions 9.0 and 8.5 contain a missing authorization flaw (CWE-862) that allows a remote attacker to send a crafted unauthenticated request and bypass authentication, thereby gaining unauthorized access to sensitive information within the application or its data stores.

Affected Systems

The affected products are IBM WebSphere Application Server 8.5 and 9.0, specifically all releases prior to 8.5.5.31 and 9.0.5.29 respectively. Users operating these versions without the corresponding fix packs are exposed to this vulnerability.

Risk and Exploitability

The CVSS score of 6.5 indicates a moderate to high potential impact, while the EPSS score of < 1% indicates a very low exploitation probability, and the vulnerability is not currently listed in the CISA KEV catalog. Attackers could exploit the flaw remotely by targeting exposed, unauthenticated endpoints and sending specially crafted requests, resulting in unauthorized data access if the vulnerability is present.

Generated by OpenCVE AI on September 20, 2026 at 22:24 UTC.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerabilities now by applying the fix pack(s) listed below. For IBM WebSphere Application Server traditional: For V9.0.0.0 through 9.0.5.28: · Apply Fix Pack 9.0.5.29 SB0030823 (availability September 2026) or later fix pack.  For V8.5.0.0 through 8.5.5.30: · Apply Fix Pack 8.5.5.31 https://www.ibm.com/support/pages/node/7285869 (availability September 2026) or later fix pack.

OpenCVE Recommended Actions

  • Apply Fix Pack 9.0.5.29 (or later) for WebSphere Application Server 9.0
  • Apply Fix Pack 8.5.5.31 (or later) for WebSphere Application Server 8.5
  • If patching is temporarily unavailable, limit network exposure to the vulnerabilities by restricting traffic to the application servers to trusted IP addresses only and consider disabling unauthenticated access to endpoints until the patch can be applied.

Generated by OpenCVE AI on September 20, 2026 at 22:24 UTC.

Tracking

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Advisories

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History

Mon, 14 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 14 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Description IBM WebSphere Application Server 9.0, and 8.5 could allow a remote attacker to bypass authentication and obtain sensitive information by sending a crafted unauthenticated request.
Title IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
First Time appeared Ibm
Ibm websphere Application Server
Weaknesses CWE-862
CPEs cpe:2.3:a:ibm:websphere_application_server:8.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:8.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:9.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_application_server:9.0:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm websphere Application Server
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Subscriptions

Ibm Websphere Application Server
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-09-14T20:13:30.315Z

Reserved: 2026-07-18T01:48:44.413Z

Link: CVE-2026-16187

cve-icon Vulnrichment

Updated: 2026-09-14T20:13:04.658Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-14T20:16:39.757

Modified: 2026-09-16T19:22:22.797

Link: CVE-2026-16187

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-20T22:30:06Z

Weaknesses