IBM WebSphere Application Server 8.5.5.3 < 8.5.5.30 / 9.x < 9.0.5.27 / Liberty 21.0.0.3 < 26.0.0.3 DoS (7261794)

high Nessus Plugin ID 300110

Synopsis

The remote web application server is affected by a DoS vulnerability.

Description

The version of IBM WebSphere Application Server running on the remote host is affected by a DoS vulnerability as referenced in the 7261794 advisory.

- In jose4j before 0.9.6, an attacker can cause a Denial-of-Service (DoS) condition by crafting a malicious JSON Web Encryption (JWE) token with an exceptionally high compression ratio. When this token is processed by the server, it results in significant memory allocation and processing time during decompression.
(CVE-2024-29371)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update to IBM WebSphere Application Server version 8.5.5.30, 9.0.5.27, 26.0.0.3 Liberty or later. Alternatively, upgrade to the minimal fix pack levels required by the interim fix and then apply Interim Fix PH69729 / PH69757.

Plugin Details

Severity: High

ID: 300110

File Name: websphere_7261794.nasl

Version: 1.1

Type: combined

Agent: windows, macosx, unix

Family: Web Servers

Published: 2/28/2026

Updated: 2/28/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2024-29371

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:ibm:websphere_application_server

Required KB Items: installed_sw/IBM WebSphere Application Server

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/25/2026

Vulnerability Publication Date: 12/17/2025

Reference Information

CVE: CVE-2024-29371

Detections

Analytics