Detections
Analytics
IBM WebSphere Application Server 9.x < 9.0.5.29 / Liberty 17.0.0.3 < 26.0.0.9 (7283567)
high Nessus Plugin ID 334999
Synopsis
The remote web application server is affected by multiple vulnerabilities.Description
The version of IBM WebSphere Application Server running on the remote host is affected by multiple vulnerabilities as referenced in the 7283567 advisory.- An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue. (CVE-2026-64958)
- Apache CXF allows to set a limit on the number of form parameters in a JAX-RS message via the maxFormParameterCount configuration option. However, no default limit is set which may lead to denial of service attacks when processing requests with very large numbers of form parameters. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue by using a default limit of 500 parameters. (CVE-2026-57819)
- Apache CXF allows to control the maximum attachment size via the attachment-max-size. Prior to Apache CXF 4.2.3 and 4.1.8 and 3.6.12, there was no default placed on this size, meaning that a denial of service attack is possible if the user doesn't explicitly set the limit. Users should update to Apache CXF 4.2.3 or 4.1.8 or 3.6.12 which fixes this problem by imposing a default attachment size limit of 50mb.
(CVE-2026-54225)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update to IBM WebSphere Application Server version 9.0.5.29, 26.0.0.9 Liberty or later.See Also
Plugin Details
Severity: High
ID: 334999
File Name: websphere_7283567.nasl
Version: 1.1
Type: Combined
Agent: windows, macosx, unix
Family: Web Servers
Published: 8/13/2026
Updated: 8/13/2026
Configuration: Enable thorough checks (optional)
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.76
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-64958
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:ibm:websphere_application_server
Required KB Items: installed_sw/IBM WebSphere Application Server
Exploit Ease: No known exploits are available
Patch Publication Date: 8/12/2026
Vulnerability Publication Date: 8/6/2026